Nonmelanoma Skin Cancer

PHOENIX – Treating superficial and nodular basal cell cancers (BCCs) with an apoptotic process induced by controlled hyperthermia resulted in strong histologic clearance of tumors, an interim report from an ongoing study showed.

“For 2,000 years, it’s been known that heat can kill cancers,” an apoptotic reaction “rather than a destructive reaction coming from excessive heat,” Christopher B. Zachary, MD, said at the annual conference of the American Society for Laser Medicine and Surgery, where the study was presented during an abstract session.

Dr. Zachary, professor and chair emeritus of the department of dermatology at the University of California, Irvine, and colleagues, evaluated a novel, noninvasive technique of controlled hyperthermia and mapping protocol (CHAMP) designed to help clinicians with margin assessment and treatment of superficial and nodular BCCs. For this prospective study, which was first described at the 2022 ASLMS annual conference and is being conducted at three centers, 73 patients with biopsy-proven superficial and nodular BCCs have been scanned with the VivoSight Dx optical coherence tomography (OCT) device to map BCC tumor margins.

The BCCs were treated with the Sciton 1,064-nm Er:YAG laser equipped with a 4-mm beam diameter scan pattern with no overlap and an 8-millisecond pulse duration, randomized to either standard 120-140 J/cm² pulses until tissue graying and contraction was observed, or the CHAMP controlled hyperthermia technique using repeated 25 J/cm² pulses under thermal camera imaging to maintain a consistent temperature of 55º C for 60 seconds. Patients were rescanned by OCT at 3 to 12 months for any signs of residual tumor and if positive, were retreated. Finally, lesions were excised for evidence of histological clearance.

To date, 48 patients have completed the study. Among the 26 patients treated with the CHAMP method, 22 (84.6%) were histologically clear, as were 19 of the 22 (86.4%) in the standard treatment group. Ulceration was uncommon with the CHAMP method, and patients healed with modest erythema, Dr. Zachary said.

Pretreatment OCT mapping of BCCs indicated that tumors extended beyond their 5-mm clinical margins in 11 cases (15%). “This will be of interest to those who treat BCCs by Mohs or standard excision,” he said. Increased vascularity measured by dynamic OCT was noted in most CHAMP patients immediately after irradiation, which suggests that apoptosis was the primary mechanism of tumor response instead of vascular destruction.

“The traditional technique for using the long pulsed 1,064-nm Er:YAG laser to cause damage and destruction of BCC is 120-140 J/cm² at one or two passes until you get to an endpoint of graying and contraction of tissue,” Dr. Zachary said. “That’s opposed to the ‘Low and Slow’ approach [where you use] multiple pulses at 25 J/cm² until you achieve an optimal time and temperature. If you treat above 60º C, you tend to get epidermal blistering, prolonged healing, and interestingly, absence of pain. I think that’s because you kill off the nerve fibers. With the low fluence multiple scan technique, you’re going for an even flat-top heating.”

Currently, he and his colleagues consider 55 degrees at 60 seconds as “the optimal parameters,” he said, but “it could be 45 degrees at 90 seconds or two minutes. We don’t know yet.”

In an interview at the meeting, one of the abstract session moderators, Mathew M. Avram, MD, JD, director of laser, cosmetics, and dermatologic surgery at Massachusetts General Hospital, Boston, said that he was encouraged by the study results as investigations into effective, noninvasive treatment of BCC continue to move forward. “Details matter such as the temperature [of energy delivery] and noninvasive imaging to delineate the appropriate margins,” said Dr. Avram, who has conducted research on the 1,064-nm long-pulsed Nd:YAG laser as an alternative treatment for nonfacial BCCs in patients who are poor surgical candidates.

“Hopefully, at some point,” he said, such approaches will “become the standard of care for many BCCs that we are now treating surgically. I don’t think this will happen in the next 3 years, but I think in the long term, it will emerge as the treatment of choice.”

The study is being funded by Michelson Diagnostics. Sciton provided the long-pulsed 1,064-nm lasers devices being used in the trial. Dr. Zachary reported having no relevant disclosures. Dr. Avram disclosed that he has received consulting fees from Sciton.

PHOENIX – Treating superficial and nodular basal cell cancers (BCCs) with an apoptotic process induced by controlled hyperthermia resulted in strong histologic clearance of tumors, an interim report from an ongoing study showed.

“For 2,000 years, it’s been known that heat can kill cancers,” an apoptotic reaction “rather than a destructive reaction coming from excessive heat,” Christopher B. Zachary, MD, said at the annual conference of the American Society for Laser Medicine and Surgery, where the study was presented during an abstract session.

Dr. Zachary, professor and chair emeritus of the department of dermatology at the University of California, Irvine, and colleagues, evaluated a novel, noninvasive technique of controlled hyperthermia and mapping protocol (CHAMP) designed to help clinicians with margin assessment and treatment of superficial and nodular BCCs. For this prospective study, which was first described at the 2022 ASLMS annual conference and is being conducted at three centers, 73 patients with biopsy-proven superficial and nodular BCCs have been scanned with the VivoSight Dx optical coherence tomography (OCT) device to map BCC tumor margins.

The BCCs were treated with the Sciton 1,064-nm Er:YAG laser equipped with a 4-mm beam diameter scan pattern with no overlap and an 8-millisecond pulse duration, randomized to either standard 120-140 J/cm² pulses until tissue graying and contraction was observed, or the CHAMP controlled hyperthermia technique using repeated 25 J/cm² pulses under thermal camera imaging to maintain a consistent temperature of 55º C for 60 seconds. Patients were rescanned by OCT at 3 to 12 months for any signs of residual tumor and if positive, were retreated. Finally, lesions were excised for evidence of histological clearance.

To date, 48 patients have completed the study. Among the 26 patients treated with the CHAMP method, 22 (84.6%) were histologically clear, as were 19 of the 22 (86.4%) in the standard treatment group. Ulceration was uncommon with the CHAMP method, and patients healed with modest erythema, Dr. Zachary said.

Pretreatment OCT mapping of BCCs indicated that tumors extended beyond their 5-mm clinical margins in 11 cases (15%). “This will be of interest to those who treat BCCs by Mohs or standard excision,” he said. Increased vascularity measured by dynamic OCT was noted in most CHAMP patients immediately after irradiation, which suggests that apoptosis was the primary mechanism of tumor response instead of vascular destruction.

“The traditional technique for using the long pulsed 1,064-nm Er:YAG laser to cause damage and destruction of BCC is 120-140 J/cm² at one or two passes until you get to an endpoint of graying and contraction of tissue,” Dr. Zachary said. “That’s opposed to the ‘Low and Slow’ approach [where you use] multiple pulses at 25 J/cm² until you achieve an optimal time and temperature. If you treat above 60º C, you tend to get epidermal blistering, prolonged healing, and interestingly, absence of pain. I think that’s because you kill off the nerve fibers. With the low fluence multiple scan technique, you’re going for an even flat-top heating.”

Currently, he and his colleagues consider 55 degrees at 60 seconds as “the optimal parameters,” he said, but “it could be 45 degrees at 90 seconds or two minutes. We don’t know yet.”

In an interview at the meeting, one of the abstract session moderators, Mathew M. Avram, MD, JD, director of laser, cosmetics, and dermatologic surgery at Massachusetts General Hospital, Boston, said that he was encouraged by the study results as investigations into effective, noninvasive treatment of BCC continue to move forward. “Details matter such as the temperature [of energy delivery] and noninvasive imaging to delineate the appropriate margins,” said Dr. Avram, who has conducted research on the 1,064-nm long-pulsed Nd:YAG laser as an alternative treatment for nonfacial BCCs in patients who are poor surgical candidates.

“Hopefully, at some point,” he said, such approaches will “become the standard of care for many BCCs that we are now treating surgically. I don’t think this will happen in the next 3 years, but I think in the long term, it will emerge as the treatment of choice.”

The study is being funded by Michelson Diagnostics. Sciton provided the long-pulsed 1,064-nm lasers devices being used in the trial. Dr. Zachary reported having no relevant disclosures. Dr. Avram disclosed that he has received consulting fees from Sciton.

PHOENIX – Treating superficial and nodular basal cell cancers (BCCs) with an apoptotic process induced by controlled hyperthermia resulted in strong histologic clearance of tumors, an interim report from an ongoing study showed.

“For 2,000 years, it’s been known that heat can kill cancers,” an apoptotic reaction “rather than a destructive reaction coming from excessive heat,” Christopher B. Zachary, MD, said at the annual conference of the American Society for Laser Medicine and Surgery, where the study was presented during an abstract session.

Dr. Zachary, professor and chair emeritus of the department of dermatology at the University of California, Irvine, and colleagues, evaluated a novel, noninvasive technique of controlled hyperthermia and mapping protocol (CHAMP) designed to help clinicians with margin assessment and treatment of superficial and nodular BCCs. For this prospective study, which was first described at the 2022 ASLMS annual conference and is being conducted at three centers, 73 patients with biopsy-proven superficial and nodular BCCs have been scanned with the VivoSight Dx optical coherence tomography (OCT) device to map BCC tumor margins.

The BCCs were treated with the Sciton 1,064-nm Er:YAG laser equipped with a 4-mm beam diameter scan pattern with no overlap and an 8-millisecond pulse duration, randomized to either standard 120-140 J/cm² pulses until tissue graying and contraction was observed, or the CHAMP controlled hyperthermia technique using repeated 25 J/cm² pulses under thermal camera imaging to maintain a consistent temperature of 55º C for 60 seconds. Patients were rescanned by OCT at 3 to 12 months for any signs of residual tumor and if positive, were retreated. Finally, lesions were excised for evidence of histological clearance.

To date, 48 patients have completed the study. Among the 26 patients treated with the CHAMP method, 22 (84.6%) were histologically clear, as were 19 of the 22 (86.4%) in the standard treatment group. Ulceration was uncommon with the CHAMP method, and patients healed with modest erythema, Dr. Zachary said.

Pretreatment OCT mapping of BCCs indicated that tumors extended beyond their 5-mm clinical margins in 11 cases (15%). “This will be of interest to those who treat BCCs by Mohs or standard excision,” he said. Increased vascularity measured by dynamic OCT was noted in most CHAMP patients immediately after irradiation, which suggests that apoptosis was the primary mechanism of tumor response instead of vascular destruction.

“The traditional technique for using the long pulsed 1,064-nm Er:YAG laser to cause damage and destruction of BCC is 120-140 J/cm² at one or two passes until you get to an endpoint of graying and contraction of tissue,” Dr. Zachary said. “That’s opposed to the ‘Low and Slow’ approach [where you use] multiple pulses at 25 J/cm² until you achieve an optimal time and temperature. If you treat above 60º C, you tend to get epidermal blistering, prolonged healing, and interestingly, absence of pain. I think that’s because you kill off the nerve fibers. With the low fluence multiple scan technique, you’re going for an even flat-top heating.”

Currently, he and his colleagues consider 55 degrees at 60 seconds as “the optimal parameters,” he said, but “it could be 45 degrees at 90 seconds or two minutes. We don’t know yet.”

In an interview at the meeting, one of the abstract session moderators, Mathew M. Avram, MD, JD, director of laser, cosmetics, and dermatologic surgery at Massachusetts General Hospital, Boston, said that he was encouraged by the study results as investigations into effective, noninvasive treatment of BCC continue to move forward. “Details matter such as the temperature [of energy delivery] and noninvasive imaging to delineate the appropriate margins,” said Dr. Avram, who has conducted research on the 1,064-nm long-pulsed Nd:YAG laser as an alternative treatment for nonfacial BCCs in patients who are poor surgical candidates.

“Hopefully, at some point,” he said, such approaches will “become the standard of care for many BCCs that we are now treating surgically. I don’t think this will happen in the next 3 years, but I think in the long term, it will emerge as the treatment of choice.”

The study is being funded by Michelson Diagnostics. Sciton provided the long-pulsed 1,064-nm lasers devices being used in the trial. Dr. Zachary reported having no relevant disclosures. Dr. Avram disclosed that he has received consulting fees from Sciton.

Adults with cancer experienced significant reductions in pain after taking medicinal cannabis, in a study.

Physician-prescribed cannabis, particularly cannabinoids, has been shown to ease cancer-related pain in adult cancer patients, who often find inadequate pain relief from medications including opioids, Saro Aprikian, MSc, a medical student at the Royal College of Surgeons, Dublin, and colleagues, wrote in their paper.

However, real-world data on the safety and effectiveness of cannabis in the cancer population and the impact on use of other medications are lacking, the researchers said.

In the study, published in BMJ Supportive & Palliative Care, the researchers reviewed data from 358 adults with cancer who were part of a multicenter cannabis registry in Canada between May 2015 and October 2018.

The average age of the patients was 57.6 years, and 48% were men. The top three cancer diagnoses in the study population were genitorurinary, breast, and colorectal.

Pain was the most common reason for obtaining a medical cannabis prescription, cited by 72.4% of patients.

Data were collected at follow-up visits conducted every 3 months over 1 year. Pain was assessed via the Brief Pain Inventory (BPI) and revised Edmonton Symptom Assessment System (ESAS-r) questionnaires and compared to baseline values. Patients rated their pain intensity on a sliding scale of 0 (none) to 10 (worst possible). Pain relief was rated on a scale of 0% (none) to 100% (complete).

Compared to baseline scores, patients showed significant decreases at 3, 6 and 9 months for BPI worst pain (5.5 at baseline, 3.6 for 3, 6, and 9 months) average pain (4.1 at baseline, 2.4, 2.3, and 2.7 for 3, 6, and 9 months, respectively), overall pain severity (2.7 at baseline, 2.3, 2.3, and 2.4 at 3, 6, and 9 months, respectively), and pain interference with daily life (4.3 at baseline, 2.4, 2.2, and 2.4 at 3, 6, and 9 months, respectively; P less than .01 for all four pain measures).

“Pain severity as reported in the ESAS-r decreased significantly at 3-month, 6-month and 9-month follow-ups,” the researchers noted.

In addition, total medication burden based on the medication quantification scale (MQS) and morphine equivalent daily dose (MEDD) were recorded at 3, 6, 9, and 12 months. MQS scores decreased compared to baseline at 3, 6, 9, and 12 months in 10%, 23.5%, 26.2%, and 31.6% of patients, respectively. Also compared with baseline, 11.1%, 31.3%, and 14.3% of patients reported decreases in MEDD scores at 3, 6, and 9 months, respectively.

Overall, products with equal amounts of active ingredients tetrahydrocannabinol (THC) and cannabidiol (CBD) were more effective than were those with a predominance of either THC or CBD, the researchers wrote.

Medical cannabis was well-tolerated; a total of 15 moderate to severe side effects were reported by 11 patients, 13 of which were minor. The most common side effects were sleepiness and fatigue, and five patients discontinued their medical cannabis because of side effects. The two serious side effects reported during the study period – pneumonia and a cardiovascular event – were deemed unlikely related to the patients’ medicinal cannabis use.

The findings were limited by several factors, including the observational design, which prevented conclusions about causality, the researchers noted. Other limitations included the loss of many patients to follow-up and incomplete data on other prescription medications in many cases.

The results support the use of medical cannabis by cancer patients as an adjunct pain relief strategy and a way to potentially reduce the use of other medications such as opioids, the authors concluded.

The study was supported by the Canadian Consortium for the Investigation of Cannabinoids, Collège des Médecins du Québec, and the Canopy Growth Corporation. The researchers had no financial conflicts to disclose.

Adults with cancer experienced significant reductions in pain after taking medicinal cannabis, in a study.

Physician-prescribed cannabis, particularly cannabinoids, has been shown to ease cancer-related pain in adult cancer patients, who often find inadequate pain relief from medications including opioids, Saro Aprikian, MSc, a medical student at the Royal College of Surgeons, Dublin, and colleagues, wrote in their paper.

However, real-world data on the safety and effectiveness of cannabis in the cancer population and the impact on use of other medications are lacking, the researchers said.

In the study, published in BMJ Supportive & Palliative Care, the researchers reviewed data from 358 adults with cancer who were part of a multicenter cannabis registry in Canada between May 2015 and October 2018.

The average age of the patients was 57.6 years, and 48% were men. The top three cancer diagnoses in the study population were genitorurinary, breast, and colorectal.

Pain was the most common reason for obtaining a medical cannabis prescription, cited by 72.4% of patients.

Data were collected at follow-up visits conducted every 3 months over 1 year. Pain was assessed via the Brief Pain Inventory (BPI) and revised Edmonton Symptom Assessment System (ESAS-r) questionnaires and compared to baseline values. Patients rated their pain intensity on a sliding scale of 0 (none) to 10 (worst possible). Pain relief was rated on a scale of 0% (none) to 100% (complete).

Compared to baseline scores, patients showed significant decreases at 3, 6 and 9 months for BPI worst pain (5.5 at baseline, 3.6 for 3, 6, and 9 months) average pain (4.1 at baseline, 2.4, 2.3, and 2.7 for 3, 6, and 9 months, respectively), overall pain severity (2.7 at baseline, 2.3, 2.3, and 2.4 at 3, 6, and 9 months, respectively), and pain interference with daily life (4.3 at baseline, 2.4, 2.2, and 2.4 at 3, 6, and 9 months, respectively; P less than .01 for all four pain measures).

“Pain severity as reported in the ESAS-r decreased significantly at 3-month, 6-month and 9-month follow-ups,” the researchers noted.

In addition, total medication burden based on the medication quantification scale (MQS) and morphine equivalent daily dose (MEDD) were recorded at 3, 6, 9, and 12 months. MQS scores decreased compared to baseline at 3, 6, 9, and 12 months in 10%, 23.5%, 26.2%, and 31.6% of patients, respectively. Also compared with baseline, 11.1%, 31.3%, and 14.3% of patients reported decreases in MEDD scores at 3, 6, and 9 months, respectively.

Overall, products with equal amounts of active ingredients tetrahydrocannabinol (THC) and cannabidiol (CBD) were more effective than were those with a predominance of either THC or CBD, the researchers wrote.

Medical cannabis was well-tolerated; a total of 15 moderate to severe side effects were reported by 11 patients, 13 of which were minor. The most common side effects were sleepiness and fatigue, and five patients discontinued their medical cannabis because of side effects. The two serious side effects reported during the study period – pneumonia and a cardiovascular event – were deemed unlikely related to the patients’ medicinal cannabis use.

The findings were limited by several factors, including the observational design, which prevented conclusions about causality, the researchers noted. Other limitations included the loss of many patients to follow-up and incomplete data on other prescription medications in many cases.

The results support the use of medical cannabis by cancer patients as an adjunct pain relief strategy and a way to potentially reduce the use of other medications such as opioids, the authors concluded.

The study was supported by the Canadian Consortium for the Investigation of Cannabinoids, Collège des Médecins du Québec, and the Canopy Growth Corporation. The researchers had no financial conflicts to disclose.

Adults with cancer experienced significant reductions in pain after taking medicinal cannabis, in a study.

Physician-prescribed cannabis, particularly cannabinoids, has been shown to ease cancer-related pain in adult cancer patients, who often find inadequate pain relief from medications including opioids, Saro Aprikian, MSc, a medical student at the Royal College of Surgeons, Dublin, and colleagues, wrote in their paper.

However, real-world data on the safety and effectiveness of cannabis in the cancer population and the impact on use of other medications are lacking, the researchers said.

In the study, published in BMJ Supportive & Palliative Care, the researchers reviewed data from 358 adults with cancer who were part of a multicenter cannabis registry in Canada between May 2015 and October 2018.

The average age of the patients was 57.6 years, and 48% were men. The top three cancer diagnoses in the study population were genitorurinary, breast, and colorectal.

Pain was the most common reason for obtaining a medical cannabis prescription, cited by 72.4% of patients.

Data were collected at follow-up visits conducted every 3 months over 1 year. Pain was assessed via the Brief Pain Inventory (BPI) and revised Edmonton Symptom Assessment System (ESAS-r) questionnaires and compared to baseline values. Patients rated their pain intensity on a sliding scale of 0 (none) to 10 (worst possible). Pain relief was rated on a scale of 0% (none) to 100% (complete).

Compared to baseline scores, patients showed significant decreases at 3, 6 and 9 months for BPI worst pain (5.5 at baseline, 3.6 for 3, 6, and 9 months) average pain (4.1 at baseline, 2.4, 2.3, and 2.7 for 3, 6, and 9 months, respectively), overall pain severity (2.7 at baseline, 2.3, 2.3, and 2.4 at 3, 6, and 9 months, respectively), and pain interference with daily life (4.3 at baseline, 2.4, 2.2, and 2.4 at 3, 6, and 9 months, respectively; P less than .01 for all four pain measures).

“Pain severity as reported in the ESAS-r decreased significantly at 3-month, 6-month and 9-month follow-ups,” the researchers noted.

In addition, total medication burden based on the medication quantification scale (MQS) and morphine equivalent daily dose (MEDD) were recorded at 3, 6, 9, and 12 months. MQS scores decreased compared to baseline at 3, 6, 9, and 12 months in 10%, 23.5%, 26.2%, and 31.6% of patients, respectively. Also compared with baseline, 11.1%, 31.3%, and 14.3% of patients reported decreases in MEDD scores at 3, 6, and 9 months, respectively.

Overall, products with equal amounts of active ingredients tetrahydrocannabinol (THC) and cannabidiol (CBD) were more effective than were those with a predominance of either THC or CBD, the researchers wrote.

Medical cannabis was well-tolerated; a total of 15 moderate to severe side effects were reported by 11 patients, 13 of which were minor. The most common side effects were sleepiness and fatigue, and five patients discontinued their medical cannabis because of side effects. The two serious side effects reported during the study period – pneumonia and a cardiovascular event – were deemed unlikely related to the patients’ medicinal cannabis use.

The findings were limited by several factors, including the observational design, which prevented conclusions about causality, the researchers noted. Other limitations included the loss of many patients to follow-up and incomplete data on other prescription medications in many cases.

The results support the use of medical cannabis by cancer patients as an adjunct pain relief strategy and a way to potentially reduce the use of other medications such as opioids, the authors concluded.

The study was supported by the Canadian Consortium for the Investigation of Cannabinoids, Collège des Médecins du Québec, and the Canopy Growth Corporation. The researchers had no financial conflicts to disclose.

On January 1, 2021, the Current Procedural Terminology (CPT) evaluation and management (E/M) reporting rules changed dramatically, with “bullet counting” no longer necessary and the coding level now based on either the new medical decision making (MDM) table or time spent on all activities relating to the care of the patient on the day of the encounter.¹ This is described in the CPT Professional Edition 2023, a book every practitioner should review annually.² In particular, every provider should read and reread pages 1 to 14—and beyond if you provide services beyond standard office visits. These changes were made with the intent to simplify the process of documentation and allow a provider to spend more time with patients, though there is still a paucity of data related to whether the new system achieves these aims.

The general rule of reporting work with CPT codes can be simply stated—“Document what you did, do what you documented, and report that which is medically necessary” (David McCafferey, MD, personal communication)—and you should never have any difficulty with audits. Unfortunately, the new system does not let an auditor, who typically lacks a medical degree, audit effectively unless they have a clear understanding of diseases and their stages. Many medical societies, including the American Medical Association³ and American Academy of Dermatology,⁴ have provided education that focuses on how to report a given vignette, but specific examples of documentation with commentary are uncommon.

To make your documentation more likely to pass audits, explicitly link parts of your documentation to CPT MDM descriptors. We offer scenarios and tips. In part 1 of this series, we discuss how to approach the “spot check,” a commonly encountered chief concern (CC) within dermatology.

Scenario 1: A Funny-Looking New Spot

A 34-year-old presents with a new spot on the left cheek that seems to be growing and changing shape rapidly. You examine the patient and discuss treatment options. The documentation reads as follows:

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma.

• Plan: Consent, biopsy via shave technique. Lidocaine hydrochloride 1% with epinephrine, 1 cc, prepare and drape, hemostasis obtained, ointment and bandage applied, and care instructions provided.

As was the case before 2021, you still need a CC, along with a medically (and medicolegally) appropriate history and physical examination. A diagnostic impression and treatment plan also should be included.

In this situation, reporting is straightforward. There is no separate E/M visit; only the CPT code 11102 for tangential biopsy is reported. An International Classification of Diseases, Tenth Revision code of D48.5 (neoplasm of uncertain behavior of skin) will be included.

Why no E/M code? This is because the biopsy includes preservice and postservice time and work that would be double reported with the E/M. Remember that the preservice work would include any history and physical examination related to the area to be biopsied.

Specifically, preservice work includes:

Inspect and palpate lesion to assess surface size, subcutaneous depth and extension, and whether fixed to underlying structures. Select the most representative and appropriate site to obtain specimen. Examine draining lymph node basins. Discuss need for skin biopsy and biopsy technique options. Describe the tangential biopsy procedure method and expected result and the potential for inconclusive pathology result. Review procedural risks, including bleeding, pain, edema, infection, delayed healing, scarring, and hyper- or hypopigmentation.⁵

Postservice work includes:

Instruct patient and family on postoperative wound care and dressing changes, as well as problems such as bleeding or pain and restrictions on activities, and follow-up care. Provide prescriptions for pain and antibiotics as necessary. Advise patient and family when results will be available and how they will be communicated. The pathology request form is filled out and signed by the physician. Complete medical record and communicate procedure/results to referring physician as appropriate.⁵

The Takeaway—Procedure codes include preservice and postservice work. If additional work for the procedure is not documented beyond that, an E/M cannot be included in the encounter.

Scenario 2: What If We Don’t Biopsy?

A 34-year-old presents with a new spot on the left cheek that seems to be growing and changing shape rapidly. You examine the patient and discuss treatment options. The documentation reads as follows:

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma.

• Plan: Review risk, benefits, and alternative options. Schedule biopsy. Discuss unique risk factor of sebaceous peau d’orange skin more prone to contour defects after biopsy.

When determining the coding level for this scenario by MDM, 3 components must be considered: number and complexity of problems addressed at the encounter (column 1), amount and/or complexity of data to be reviewed and analyzed (column 2), and risk of complications and/or morbidity or mortality of patient management (column 3).¹ There are no data that are reviewed, so the auditor will assume minimal data to be reviewed and/or analyzed (level 2, row 2 in the MDM table). However, there may be a lot of variation in how an auditor would address the number and complexity of problems (level 1). Consider that you must explicitly state what you are thinking, as an auditor may not know melanoma is a life-threatening diagnosis. From the perspective of the auditor, could this be a:

• Self-limited or minor problem (level 2, or minimal problem in the MDM table)?¹

• Stable chronic illness (level 3, or low-level problem)?¹

• Undiagnosed new problem with uncertain prognosis (level 4, or moderate level problem)?¹

• Acute illness with systemic symptoms (level 4, or moderate level problem)?¹

• Acute or chronic illness or injury that poses a threat to life or bodily function (level 5, or high-level problem)?¹

• All of the above?

Similarly, there may be variation in how the risk (column 3) would be interpreted in this scenario. The treatment gives no guidance, so the auditor may assume this has a minimal risk of morbidity (level 2) or possibly a low risk of morbidity from additional diagnostic testing or treatment (level 3), as opposed to a moderate risk of morbidity (level 4).¹The Takeaway—In the auditor’s mind, this could be a straightforward (CPT codes 99202/99212) or lowlevel (99203/99213) visit as opposed to a moderate-level (99204/99214) visit. From the above documentation, an auditor would not be able to tell what you are thinking, and you can be assured they will not look further into the diagnosis or treatment to learn. That is not their job. So, let us clarify by explicitly stating what you are thinking in the context of the MDM grid.

Modified Scenario 2: A Funny-Looking New Spot With MDM Descriptors to Guide an Auditor

Below are modifications to the documentation for scenario 2 to guide an auditor:

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma (undiagnosed new problem with uncertain prognosis).

• Plan: Discuss risks, benefits, and alternatives, including biopsy (decision regarding minor surgery with identified patient or procedure risk factors) vs a noninvasive gene expression profiling melanoma rule-out test. Patient prefers the latter.

In this scenario, the level of MDM is much more clearly documented (as bolded above).

The number and complexity of problems would be an undiagnosed new problem with uncertain prognosis, which would be moderate complexity (column 1, level 4).¹ There are no data that are reviewed or analyzed, which would be straightforward (column 2, level 2). For risk, the discussion of the biopsy as part of the diagnostic choices should include discussion of possible scarring, bleeding, pain, and infection, which would be considered best described as a decision regarding minor surgery with identified patient or procedure risk factors, which would make this of moderate complexity (column 3, level 4).¹

Importantly, even if the procedure is not chosen as the final treatment plan, the discussion regarding the surgery, including the risks, benefits, and alternatives, can still count toward this category in the MDM table. Therefore, in this scenario with the updated and clarified documentation, this would be reported as CPT code 99204 for a new patient, while an established patient would be 99214.

Scenario 1 Revisited: A Funny-Looking New Spot

Below is scenario 1 with enhanced documentation, now applied to our procedure-only visit.

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma (undiagnosed new problem with uncertain prognosis).

• Plan: Discuss risks, benefits, and alternatives, including biopsy (decision regarding minor surgery with identified patient or procedure risk factors) vs a noninvasive 2 gene expression profiling melanoma rule-out test. Patient wants biopsy. Consent, biopsy via shave technique. Lidocaine hydrochloride 1% with epinephrine, 1 cc, prepare and drape, hemostasis obtained, ointment and bandage applied, and care instructions provided.

This documentation would only allow reporting the biopsy as in Scenario 1, as the decision to perform a 0- or 10-day global procedure is bundled with the procedure if performed on the same date of service.

Final Thoughts

Spot checks are commonly encountered dermatologic visits. With the updated E/M guidelines, clarifying and streamlining your documentation is crucial. In particular, utilizing language that clearly defines number and complexity of problems, amount and/or complexity of data to be reviewed and analyzed, and appropriate risk stratification is crucial to ensuring appropriate reimbursement and minimizing your pain with audits.

On January 1, 2021, the Current Procedural Terminology (CPT) evaluation and management (E/M) reporting rules changed dramatically, with “bullet counting” no longer necessary and the coding level now based on either the new medical decision making (MDM) table or time spent on all activities relating to the care of the patient on the day of the encounter.¹ This is described in the CPT Professional Edition 2023, a book every practitioner should review annually.² In particular, every provider should read and reread pages 1 to 14—and beyond if you provide services beyond standard office visits. These changes were made with the intent to simplify the process of documentation and allow a provider to spend more time with patients, though there is still a paucity of data related to whether the new system achieves these aims.

The general rule of reporting work with CPT codes can be simply stated—“Document what you did, do what you documented, and report that which is medically necessary” (David McCafferey, MD, personal communication)—and you should never have any difficulty with audits. Unfortunately, the new system does not let an auditor, who typically lacks a medical degree, audit effectively unless they have a clear understanding of diseases and their stages. Many medical societies, including the American Medical Association³ and American Academy of Dermatology,⁴ have provided education that focuses on how to report a given vignette, but specific examples of documentation with commentary are uncommon.

To make your documentation more likely to pass audits, explicitly link parts of your documentation to CPT MDM descriptors. We offer scenarios and tips. In part 1 of this series, we discuss how to approach the “spot check,” a commonly encountered chief concern (CC) within dermatology.

Scenario 1: A Funny-Looking New Spot

A 34-year-old presents with a new spot on the left cheek that seems to be growing and changing shape rapidly. You examine the patient and discuss treatment options. The documentation reads as follows:

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma.

• Plan: Consent, biopsy via shave technique. Lidocaine hydrochloride 1% with epinephrine, 1 cc, prepare and drape, hemostasis obtained, ointment and bandage applied, and care instructions provided.

As was the case before 2021, you still need a CC, along with a medically (and medicolegally) appropriate history and physical examination. A diagnostic impression and treatment plan also should be included.

In this situation, reporting is straightforward. There is no separate E/M visit; only the CPT code 11102 for tangential biopsy is reported. An International Classification of Diseases, Tenth Revision code of D48.5 (neoplasm of uncertain behavior of skin) will be included.

Why no E/M code? This is because the biopsy includes preservice and postservice time and work that would be double reported with the E/M. Remember that the preservice work would include any history and physical examination related to the area to be biopsied.

Specifically, preservice work includes:

Inspect and palpate lesion to assess surface size, subcutaneous depth and extension, and whether fixed to underlying structures. Select the most representative and appropriate site to obtain specimen. Examine draining lymph node basins. Discuss need for skin biopsy and biopsy technique options. Describe the tangential biopsy procedure method and expected result and the potential for inconclusive pathology result. Review procedural risks, including bleeding, pain, edema, infection, delayed healing, scarring, and hyper- or hypopigmentation.⁵

Postservice work includes:

Instruct patient and family on postoperative wound care and dressing changes, as well as problems such as bleeding or pain and restrictions on activities, and follow-up care. Provide prescriptions for pain and antibiotics as necessary. Advise patient and family when results will be available and how they will be communicated. The pathology request form is filled out and signed by the physician. Complete medical record and communicate procedure/results to referring physician as appropriate.⁵

The Takeaway—Procedure codes include preservice and postservice work. If additional work for the procedure is not documented beyond that, an E/M cannot be included in the encounter.

Scenario 2: What If We Don’t Biopsy?

A 34-year-old presents with a new spot on the left cheek that seems to be growing and changing shape rapidly. You examine the patient and discuss treatment options. The documentation reads as follows:

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma.

• Plan: Review risk, benefits, and alternative options. Schedule biopsy. Discuss unique risk factor of sebaceous peau d’orange skin more prone to contour defects after biopsy.

When determining the coding level for this scenario by MDM, 3 components must be considered: number and complexity of problems addressed at the encounter (column 1), amount and/or complexity of data to be reviewed and analyzed (column 2), and risk of complications and/or morbidity or mortality of patient management (column 3).¹ There are no data that are reviewed, so the auditor will assume minimal data to be reviewed and/or analyzed (level 2, row 2 in the MDM table). However, there may be a lot of variation in how an auditor would address the number and complexity of problems (level 1). Consider that you must explicitly state what you are thinking, as an auditor may not know melanoma is a life-threatening diagnosis. From the perspective of the auditor, could this be a:

• Self-limited or minor problem (level 2, or minimal problem in the MDM table)?¹

• Stable chronic illness (level 3, or low-level problem)?¹

• Undiagnosed new problem with uncertain prognosis (level 4, or moderate level problem)?¹

• Acute illness with systemic symptoms (level 4, or moderate level problem)?¹

• Acute or chronic illness or injury that poses a threat to life or bodily function (level 5, or high-level problem)?¹

• All of the above?

Similarly, there may be variation in how the risk (column 3) would be interpreted in this scenario. The treatment gives no guidance, so the auditor may assume this has a minimal risk of morbidity (level 2) or possibly a low risk of morbidity from additional diagnostic testing or treatment (level 3), as opposed to a moderate risk of morbidity (level 4).¹The Takeaway—In the auditor’s mind, this could be a straightforward (CPT codes 99202/99212) or lowlevel (99203/99213) visit as opposed to a moderate-level (99204/99214) visit. From the above documentation, an auditor would not be able to tell what you are thinking, and you can be assured they will not look further into the diagnosis or treatment to learn. That is not their job. So, let us clarify by explicitly stating what you are thinking in the context of the MDM grid.

Modified Scenario 2: A Funny-Looking New Spot With MDM Descriptors to Guide an Auditor

Below are modifications to the documentation for scenario 2 to guide an auditor:

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma (undiagnosed new problem with uncertain prognosis).

• Plan: Discuss risks, benefits, and alternatives, including biopsy (decision regarding minor surgery with identified patient or procedure risk factors) vs a noninvasive gene expression profiling melanoma rule-out test. Patient prefers the latter.

In this scenario, the level of MDM is much more clearly documented (as bolded above).

The number and complexity of problems would be an undiagnosed new problem with uncertain prognosis, which would be moderate complexity (column 1, level 4).¹ There are no data that are reviewed or analyzed, which would be straightforward (column 2, level 2). For risk, the discussion of the biopsy as part of the diagnostic choices should include discussion of possible scarring, bleeding, pain, and infection, which would be considered best described as a decision regarding minor surgery with identified patient or procedure risk factors, which would make this of moderate complexity (column 3, level 4).¹

Importantly, even if the procedure is not chosen as the final treatment plan, the discussion regarding the surgery, including the risks, benefits, and alternatives, can still count toward this category in the MDM table. Therefore, in this scenario with the updated and clarified documentation, this would be reported as CPT code 99204 for a new patient, while an established patient would be 99214.

Scenario 1 Revisited: A Funny-Looking New Spot

Below is scenario 1 with enhanced documentation, now applied to our procedure-only visit.

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma (undiagnosed new problem with uncertain prognosis).

• Plan: Discuss risks, benefits, and alternatives, including biopsy (decision regarding minor surgery with identified patient or procedure risk factors) vs a noninvasive 2 gene expression profiling melanoma rule-out test. Patient wants biopsy. Consent, biopsy via shave technique. Lidocaine hydrochloride 1% with epinephrine, 1 cc, prepare and drape, hemostasis obtained, ointment and bandage applied, and care instructions provided.

This documentation would only allow reporting the biopsy as in Scenario 1, as the decision to perform a 0- or 10-day global procedure is bundled with the procedure if performed on the same date of service.

Final Thoughts

Spot checks are commonly encountered dermatologic visits. With the updated E/M guidelines, clarifying and streamlining your documentation is crucial. In particular, utilizing language that clearly defines number and complexity of problems, amount and/or complexity of data to be reviewed and analyzed, and appropriate risk stratification is crucial to ensuring appropriate reimbursement and minimizing your pain with audits.

On January 1, 2021, the Current Procedural Terminology (CPT) evaluation and management (E/M) reporting rules changed dramatically, with “bullet counting” no longer necessary and the coding level now based on either the new medical decision making (MDM) table or time spent on all activities relating to the care of the patient on the day of the encounter.¹ This is described in the CPT Professional Edition 2023, a book every practitioner should review annually.² In particular, every provider should read and reread pages 1 to 14—and beyond if you provide services beyond standard office visits. These changes were made with the intent to simplify the process of documentation and allow a provider to spend more time with patients, though there is still a paucity of data related to whether the new system achieves these aims.

The general rule of reporting work with CPT codes can be simply stated—“Document what you did, do what you documented, and report that which is medically necessary” (David McCafferey, MD, personal communication)—and you should never have any difficulty with audits. Unfortunately, the new system does not let an auditor, who typically lacks a medical degree, audit effectively unless they have a clear understanding of diseases and their stages. Many medical societies, including the American Medical Association³ and American Academy of Dermatology,⁴ have provided education that focuses on how to report a given vignette, but specific examples of documentation with commentary are uncommon.

To make your documentation more likely to pass audits, explicitly link parts of your documentation to CPT MDM descriptors. We offer scenarios and tips. In part 1 of this series, we discuss how to approach the “spot check,” a commonly encountered chief concern (CC) within dermatology.

Scenario 1: A Funny-Looking New Spot

A 34-year-old presents with a new spot on the left cheek that seems to be growing and changing shape rapidly. You examine the patient and discuss treatment options. The documentation reads as follows:

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma.

• Plan: Consent, biopsy via shave technique. Lidocaine hydrochloride 1% with epinephrine, 1 cc, prepare and drape, hemostasis obtained, ointment and bandage applied, and care instructions provided.

As was the case before 2021, you still need a CC, along with a medically (and medicolegally) appropriate history and physical examination. A diagnostic impression and treatment plan also should be included.

In this situation, reporting is straightforward. There is no separate E/M visit; only the CPT code 11102 for tangential biopsy is reported. An International Classification of Diseases, Tenth Revision code of D48.5 (neoplasm of uncertain behavior of skin) will be included.

Why no E/M code? This is because the biopsy includes preservice and postservice time and work that would be double reported with the E/M. Remember that the preservice work would include any history and physical examination related to the area to be biopsied.

Specifically, preservice work includes:

Inspect and palpate lesion to assess surface size, subcutaneous depth and extension, and whether fixed to underlying structures. Select the most representative and appropriate site to obtain specimen. Examine draining lymph node basins. Discuss need for skin biopsy and biopsy technique options. Describe the tangential biopsy procedure method and expected result and the potential for inconclusive pathology result. Review procedural risks, including bleeding, pain, edema, infection, delayed healing, scarring, and hyper- or hypopigmentation.⁵

Postservice work includes:

Instruct patient and family on postoperative wound care and dressing changes, as well as problems such as bleeding or pain and restrictions on activities, and follow-up care. Provide prescriptions for pain and antibiotics as necessary. Advise patient and family when results will be available and how they will be communicated. The pathology request form is filled out and signed by the physician. Complete medical record and communicate procedure/results to referring physician as appropriate.⁵

The Takeaway—Procedure codes include preservice and postservice work. If additional work for the procedure is not documented beyond that, an E/M cannot be included in the encounter.

Scenario 2: What If We Don’t Biopsy?

A 34-year-old presents with a new spot on the left cheek that seems to be growing and changing shape rapidly. You examine the patient and discuss treatment options. The documentation reads as follows:

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma.

• Plan: Review risk, benefits, and alternative options. Schedule biopsy. Discuss unique risk factor of sebaceous peau d’orange skin more prone to contour defects after biopsy.

When determining the coding level for this scenario by MDM, 3 components must be considered: number and complexity of problems addressed at the encounter (column 1), amount and/or complexity of data to be reviewed and analyzed (column 2), and risk of complications and/or morbidity or mortality of patient management (column 3).¹ There are no data that are reviewed, so the auditor will assume minimal data to be reviewed and/or analyzed (level 2, row 2 in the MDM table). However, there may be a lot of variation in how an auditor would address the number and complexity of problems (level 1). Consider that you must explicitly state what you are thinking, as an auditor may not know melanoma is a life-threatening diagnosis. From the perspective of the auditor, could this be a:

• Self-limited or minor problem (level 2, or minimal problem in the MDM table)?¹

• Stable chronic illness (level 3, or low-level problem)?¹

• Undiagnosed new problem with uncertain prognosis (level 4, or moderate level problem)?¹

• Acute illness with systemic symptoms (level 4, or moderate level problem)?¹

• Acute or chronic illness or injury that poses a threat to life or bodily function (level 5, or high-level problem)?¹

• All of the above?

Similarly, there may be variation in how the risk (column 3) would be interpreted in this scenario. The treatment gives no guidance, so the auditor may assume this has a minimal risk of morbidity (level 2) or possibly a low risk of morbidity from additional diagnostic testing or treatment (level 3), as opposed to a moderate risk of morbidity (level 4).¹The Takeaway—In the auditor’s mind, this could be a straightforward (CPT codes 99202/99212) or lowlevel (99203/99213) visit as opposed to a moderate-level (99204/99214) visit. From the above documentation, an auditor would not be able to tell what you are thinking, and you can be assured they will not look further into the diagnosis or treatment to learn. That is not their job. So, let us clarify by explicitly stating what you are thinking in the context of the MDM grid.

Modified Scenario 2: A Funny-Looking New Spot With MDM Descriptors to Guide an Auditor

Below are modifications to the documentation for scenario 2 to guide an auditor:

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma (undiagnosed new problem with uncertain prognosis).

• Plan: Discuss risks, benefits, and alternatives, including biopsy (decision regarding minor surgery with identified patient or procedure risk factors) vs a noninvasive gene expression profiling melanoma rule-out test. Patient prefers the latter.

In this scenario, the level of MDM is much more clearly documented (as bolded above).

The number and complexity of problems would be an undiagnosed new problem with uncertain prognosis, which would be moderate complexity (column 1, level 4).¹ There are no data that are reviewed or analyzed, which would be straightforward (column 2, level 2). For risk, the discussion of the biopsy as part of the diagnostic choices should include discussion of possible scarring, bleeding, pain, and infection, which would be considered best described as a decision regarding minor surgery with identified patient or procedure risk factors, which would make this of moderate complexity (column 3, level 4).¹

Importantly, even if the procedure is not chosen as the final treatment plan, the discussion regarding the surgery, including the risks, benefits, and alternatives, can still count toward this category in the MDM table. Therefore, in this scenario with the updated and clarified documentation, this would be reported as CPT code 99204 for a new patient, while an established patient would be 99214.

Scenario 1 Revisited: A Funny-Looking New Spot

Below is scenario 1 with enhanced documentation, now applied to our procedure-only visit.

• CC: New spot on left cheek that seems to be growing and changing shape rapidly.

• History: No family history of skin cancer; concerned about scarring, no blood thinner.

• Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy.

• Impression: rule out melanoma (undiagnosed new problem with uncertain prognosis).

• Plan: Discuss risks, benefits, and alternatives, including biopsy (decision regarding minor surgery with identified patient or procedure risk factors) vs a noninvasive 2 gene expression profiling melanoma rule-out test. Patient wants biopsy. Consent, biopsy via shave technique. Lidocaine hydrochloride 1% with epinephrine, 1 cc, prepare and drape, hemostasis obtained, ointment and bandage applied, and care instructions provided.

This documentation would only allow reporting the biopsy as in Scenario 1, as the decision to perform a 0- or 10-day global procedure is bundled with the procedure if performed on the same date of service.

Final Thoughts

Spot checks are commonly encountered dermatologic visits. With the updated E/M guidelines, clarifying and streamlining your documentation is crucial. In particular, utilizing language that clearly defines number and complexity of problems, amount and/or complexity of data to be reviewed and analyzed, and appropriate risk stratification is crucial to ensuring appropriate reimbursement and minimizing your pain with audits.

Cutaneous angiosarcoma (cAS) is a rare malignancy arising from vascular or lymphatic tissue. It classically presents during the sixth or seventh decades of life as a raised purple papule or plaque on the head and neck areas.¹ Primary cAS frequently mimics benign conditions, leading to delays in care. Such delays coupled with the aggressive nature of angiosarcomas leads to a poor prognosis. Five-year survival rates range from 11% to 50%, and more than half of patients die within 1 year of diagnosis.^2-7

Currently, there is no consensus on the most effective treatments, as the rare nature of cAS has made the development of controlled clinical trials difficult. Wide local excision (WLE) is most frequently employed; however, the tumor’s infiltrative growth makes complete resection and negative surgical margins difficult to achieve.⁸ Recently, Mohs micrographic surgery (MMS) has been postulated as a treatment option. The tissue-sparing nature and intraoperative margin control of MMS may provide tumor eradication and cosmesis benefits reported with other cutaneous malignancies.⁹

Nearly all localized cASs are treated with surgical excision with or without adjuvant treatment modalities; however, it is unclear which of these modalities provide a survival benefit. We conducted a systematic review of the literature to compare treatment modalities for localized cAS of the head and neck regions and to compare treatments based on tumor stage.

METHODS

A literature search was performed to identify published studies indexed by MEDLINE, Cochrane Central Register of Controlled Trials (CENTRAL), Embase, and PubMed from January 1, 1977, to May 8, 2020, reporting on cAS and treatment modalities used. The search was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines.⁵ Data extracted included patient demographics, tumor characteristics (including T1 [≤5 cm] and T2 [>5 cm and ≤10 cm] based on the American Joint Committee on Cancer soft tissue sarcoma staging criteria), treatments used, follow-up time, overall survival (OS) rates, and complications.^10,11

Studies were required to (1) include participants with head and neck cAS; (2) report original patient data following cAS treatment with surgical (WLE or MMS) and/or nonsurgical modalities (chemotherapy [CT], radiotherapy [RT], immunotherapy [IT]); (3) report outcome data related to OS rates following treatment; and (4) have articles published in English. Given the rare nature of cAS, there was no limitation on the number of participants needed.

The Newcastle-Ottawa scale for observational studies was used to assess the quality of studies.¹² Higher scores indicate low risk of bias, while lower scores represent high risk of bias.

Continuous data were reported with means and SDs, while categorical variables were reported as percentages. Overall survival means and SDs were compared between treatment modalities using an independent sample t test with P<.05 considered statistically significant. Due to the heterogeneity of the data, a meta-analysis was not reported.

RESULTS

Literature Search and Risk of Bias Assessment

There were 283 manuscripts identified, 56 articles read in full, and 40 articles included in the review (Figure). Among the 16 studies not meeting inclusion criteria, 7 did not provide enough data to isolate head and neck cAS cases,^1,13-18 6 did not report outcomes related to the current review,^19-24 and 3 did not provide enough data to isolate different treatment outcomes.^25-27 Among the included studies, 32 reported use of WLE: WLE alone (n=21)^2,7,11,28-45; WLE with RT (n=24)^{2,3,11,28-31,33-36,38-41,43-51}; WLE with CT (n=7)^{2,31,35,39,41,48,52}; WLE with RT and CT (n=11)^{2,29,31,33-35,39,40,48,52,53}; WLE with RT and IT (n=3)^35,54,55; and WLE with RT, CT, and IT (n=1).⁵³ Nine studies reported MMS: MMS alone (n=5)^39,56-59; MMS with RT (n=3)^32,50,60,61; and MMS with RT and CT (n=1).⁵¹

Risk of bias assessment identified low risk in 3 articles. High risk was identified in 5 case reports,^57-61 and 1 study did not describe patient selection.⁴³ Clayton et al⁵⁶ showed intermediate risk, given the study controlled for 1 factor.

Patient Demographics

A total of 1295 patients were included. The pooled mean age of the patients was 67.5 years (range, 3–88 years), and 64.7% were male. There were 79 cases identified as T1 and 105 as T2. A total of 825 cases were treated using WLE with or without adjuvant therapy, while a total of 9 cases were treated using MMS with and without adjuvant therapies (Table). There were 461 cases treated without surgical excision: RT alone (n=261), CT alone (n=38), IT alone (n=35), RT with CT (n=81), RT with IT (n=34), and RT with CT and IT (n=12)(Table). The median follow-up period across all studies was 23.5 months (range, 1–228 months).

Comparison Between Surgical and Nonsurgical Modalities

Wide Local Excision—Wide local excision (n=825; 63.7%) alone or in combination with other therapies was the most frequently used treatment modality. The mean (SD) OS was longest for WLE with RT, CT, and IT (n=3; 39.3 [24.1]), followed by WLE with RT (n=447; 35.9 [34.3] months), WLE with CT (n=13; 32.4 [30.2] months), WLE alone (n=324; 29.6 [34.1] months), WLE with RT and IT (n=11; 23.5 [4.9] months), and WLE with RT and CT (n=27; 20.7 [13.1] months).

Nonsurgical Modalities—Nonsurgical methods were used less frequently than surgical methods (n=461; 35.6%). The mean (SD) OS time in descending order was as follows: RT with CT and IT (n=12; 34.9 [1.2] months), RT with CT (n=81; 30.4 [37.8] months), IT alone (n=35; 25.7 [no SD reported] months), RT with IT (n=34; 20.5 [8.6] months), CT alone (n=38; 20.1 [15.9] months), and RT alone (n=261; 12.8 [8.3] months).

When comparing mean (SD) OS outcomes between surgical and nonsurgical treatment modalities, only the addition of WLE to RT significantly increased OS when compared with RT alone (WLE, 35.9 [34.3] months; RT alone, 12.8 [8.3] months; P=.001). When WLE was added to CT or both RT and CT, there was no significant difference with OS when compared with CT alone (WLE with CT, 32.4 [30.2] months; CT alone, 20.1 [15.9] months; P=.065); or both RT and CT in combination (WLE with RT and CT, 20.7 [13.1] months; RT and CT, 30.4 [37.8] months; P=.204).

Comparison Between T1 and T2 cAS

T1 Angiosarcoma—There were 79 patients identified as having T1 tumors across 16 studies.^{2,31,32,34,39-41,46,48-50,53,58-60,62} The mean (SD) OS was longest for WLE with RT, CT, and IT (n=2; 56.0 [6.0] months), followed by WLE with CT (n=4; 54.5 [41.0] months); WLE with RT (n=30; 39.7 [41.2] months); WLE alone (n=22; 37.2 [37.3] months); WLE with both RT and CT (n=7; 25.5 [18.7] months); RT with IT (n=2; 20.0 [11.0] months); RT with CT (n=6; 15.7 [6.8] months); and RT alone (n=1; 13 [no SD]) months)(eTable).

T2 Angiosarcoma—There were 105 patients with T2 tumors in 15 studies.^{2,31,32,34,39-41,46,48-50,52,53,57,62} The mean (SD) OS for each treatment modality in descending order was as follows: RT with CT and IT (n=1; 36 [no SD reported] months); RT with CT (n=23; 34.3 [46.3] months); WLE with RT (n=21; 26.3 [23.8] months); WLE with CT (n=8; 21.5 [16.6] months); WLE alone (n=16; 19.8 [15.6] months); WLE with RT and CT (n=14; 19.2 [10.5] months); RT alone (n=17; 10.1 [5.5] months); CT alone (n=2; 6.7 [3.7] months); and WLE with RT, CT, and IT (n=1; 6.0 [no SD] months)(eTable).

Mohs Micrographic Surgery—The use of MMS was only identified in case reports or small observational studies for a total of 9 patients. Five cASs were treated with MMS alone for a mean (SD) OS of 37 (21.5) months, with 4 reporting cAS staging: 2 were T1^58,59 (mean [SD] OS, 37.0 [17.0] months) and 2 were T2 tumors^39,57 (mean [SD] OS, 44.5 [26.5] months). Mohs micrographic surgery with RT was used for 3 tumors (mean [SD] OS, 34.0 [26.9] months); 2 were T1^50,60 (mean [SD] OS, 42.0 [30.0] months) and 1 unreported staging (eTable).⁵⁶ Mohs micrographic surgery with both RT and CT was used in 1 patient (unreported staging; OS, 82 months).⁵¹

Complications

Complications were rare and mainly associated with CT and RT. Four studies reported radiation dermatitis with RT.^53,55,62,63 Two studies reported peripheral neuropathy and myelotoxicity with CT.^35,51 Only 1 study reported poor wound healing due to surgical complications.²⁹

COMMENT

Cutaneous angiosarcomas are rare and have limited treatment guidelines. Surgical excision does appear to be an effective adjunct to nonsurgical treatments, particularly WLE combined with RT, CT, and IT. Although MMS ultimately may be useful for cAS, the limited number and substantial heterogeneity of reported cases precludes definitive conclusions at this time.

Achieving margin control during WLE is associated with higher OS when treating angiosarcoma,^36,46 which is particularly true for T1 tumors where margin control is imperative, and many cases are treated with a combination of WLE and RT. Overall survival times are lower for T2 tumors, as these tumors are larger and most likely have spread; therefore, more aggressive combination treatments were more prevalent. In these cases, complete margin control may be difficult to achieve and may not be as critical to the outcome if another form of adjuvant therapy can be administered promptly.^24,64

When surgery is contraindicated, RT with or without CT was the most commonly reported treatment modality. However, these treatments were notably less effective than when used in combination with surgical resection. The use of RT alone has a recurrence rate reported up to 100% in certain studies, suggesting the need to utilize RT in combination with other modalities.^23,39 It is important to note that RT often is used as monotherapy in palliative treatment, which may indirectly skew survival rates.²

Limitations of the study include a lack of randomized controlled trials. Most reports were retrospective reviews or case series, and tumor staging was sparsely reported. Finally, although MMS may provide utility in the treatment of cAS, the sample size of 9 precluded definitive conclusions from being formed about its efficacy.

CONCLUSION

Cutaneous angiosarcoma is rare and has limited data comparing different treatment modalities. The paucity of data currently limits definitive recommendations; however, both surgical and nonsurgical modalities have demonstrated potential efficacy in the treatment of cAS and may benefit from additional research. Clinicians should consider a multidisciplinary approach for patients with a diagnosis of cAS to tailor treatments on a case-by-case basis.

Cutaneous angiosarcoma (cAS) is a rare malignancy arising from vascular or lymphatic tissue. It classically presents during the sixth or seventh decades of life as a raised purple papule or plaque on the head and neck areas.¹ Primary cAS frequently mimics benign conditions, leading to delays in care. Such delays coupled with the aggressive nature of angiosarcomas leads to a poor prognosis. Five-year survival rates range from 11% to 50%, and more than half of patients die within 1 year of diagnosis.^2-7

Currently, there is no consensus on the most effective treatments, as the rare nature of cAS has made the development of controlled clinical trials difficult. Wide local excision (WLE) is most frequently employed; however, the tumor’s infiltrative growth makes complete resection and negative surgical margins difficult to achieve.⁸ Recently, Mohs micrographic surgery (MMS) has been postulated as a treatment option. The tissue-sparing nature and intraoperative margin control of MMS may provide tumor eradication and cosmesis benefits reported with other cutaneous malignancies.⁹

Nearly all localized cASs are treated with surgical excision with or without adjuvant treatment modalities; however, it is unclear which of these modalities provide a survival benefit. We conducted a systematic review of the literature to compare treatment modalities for localized cAS of the head and neck regions and to compare treatments based on tumor stage.

METHODS

A literature search was performed to identify published studies indexed by MEDLINE, Cochrane Central Register of Controlled Trials (CENTRAL), Embase, and PubMed from January 1, 1977, to May 8, 2020, reporting on cAS and treatment modalities used. The search was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines.⁵ Data extracted included patient demographics, tumor characteristics (including T1 [≤5 cm] and T2 [>5 cm and ≤10 cm] based on the American Joint Committee on Cancer soft tissue sarcoma staging criteria), treatments used, follow-up time, overall survival (OS) rates, and complications.^10,11

Studies were required to (1) include participants with head and neck cAS; (2) report original patient data following cAS treatment with surgical (WLE or MMS) and/or nonsurgical modalities (chemotherapy [CT], radiotherapy [RT], immunotherapy [IT]); (3) report outcome data related to OS rates following treatment; and (4) have articles published in English. Given the rare nature of cAS, there was no limitation on the number of participants needed.

The Newcastle-Ottawa scale for observational studies was used to assess the quality of studies.¹² Higher scores indicate low risk of bias, while lower scores represent high risk of bias.

Continuous data were reported with means and SDs, while categorical variables were reported as percentages. Overall survival means and SDs were compared between treatment modalities using an independent sample t test with P<.05 considered statistically significant. Due to the heterogeneity of the data, a meta-analysis was not reported.

RESULTS

Literature Search and Risk of Bias Assessment

There were 283 manuscripts identified, 56 articles read in full, and 40 articles included in the review (Figure). Among the 16 studies not meeting inclusion criteria, 7 did not provide enough data to isolate head and neck cAS cases,^1,13-18 6 did not report outcomes related to the current review,^19-24 and 3 did not provide enough data to isolate different treatment outcomes.^25-27 Among the included studies, 32 reported use of WLE: WLE alone (n=21)^2,7,11,28-45; WLE with RT (n=24)^{2,3,11,28-31,33-36,38-41,43-51}; WLE with CT (n=7)^{2,31,35,39,41,48,52}; WLE with RT and CT (n=11)^{2,29,31,33-35,39,40,48,52,53}; WLE with RT and IT (n=3)^35,54,55; and WLE with RT, CT, and IT (n=1).⁵³ Nine studies reported MMS: MMS alone (n=5)^39,56-59; MMS with RT (n=3)^32,50,60,61; and MMS with RT and CT (n=1).⁵¹

Risk of bias assessment identified low risk in 3 articles. High risk was identified in 5 case reports,^57-61 and 1 study did not describe patient selection.⁴³ Clayton et al⁵⁶ showed intermediate risk, given the study controlled for 1 factor.

Patient Demographics

A total of 1295 patients were included. The pooled mean age of the patients was 67.5 years (range, 3–88 years), and 64.7% were male. There were 79 cases identified as T1 and 105 as T2. A total of 825 cases were treated using WLE with or without adjuvant therapy, while a total of 9 cases were treated using MMS with and without adjuvant therapies (Table). There were 461 cases treated without surgical excision: RT alone (n=261), CT alone (n=38), IT alone (n=35), RT with CT (n=81), RT with IT (n=34), and RT with CT and IT (n=12)(Table). The median follow-up period across all studies was 23.5 months (range, 1–228 months).

Comparison Between Surgical and Nonsurgical Modalities

Wide Local Excision—Wide local excision (n=825; 63.7%) alone or in combination with other therapies was the most frequently used treatment modality. The mean (SD) OS was longest for WLE with RT, CT, and IT (n=3; 39.3 [24.1]), followed by WLE with RT (n=447; 35.9 [34.3] months), WLE with CT (n=13; 32.4 [30.2] months), WLE alone (n=324; 29.6 [34.1] months), WLE with RT and IT (n=11; 23.5 [4.9] months), and WLE with RT and CT (n=27; 20.7 [13.1] months).

Nonsurgical Modalities—Nonsurgical methods were used less frequently than surgical methods (n=461; 35.6%). The mean (SD) OS time in descending order was as follows: RT with CT and IT (n=12; 34.9 [1.2] months), RT with CT (n=81; 30.4 [37.8] months), IT alone (n=35; 25.7 [no SD reported] months), RT with IT (n=34; 20.5 [8.6] months), CT alone (n=38; 20.1 [15.9] months), and RT alone (n=261; 12.8 [8.3] months).

When comparing mean (SD) OS outcomes between surgical and nonsurgical treatment modalities, only the addition of WLE to RT significantly increased OS when compared with RT alone (WLE, 35.9 [34.3] months; RT alone, 12.8 [8.3] months; P=.001). When WLE was added to CT or both RT and CT, there was no significant difference with OS when compared with CT alone (WLE with CT, 32.4 [30.2] months; CT alone, 20.1 [15.9] months; P=.065); or both RT and CT in combination (WLE with RT and CT, 20.7 [13.1] months; RT and CT, 30.4 [37.8] months; P=.204).

Comparison Between T1 and T2 cAS

T1 Angiosarcoma—There were 79 patients identified as having T1 tumors across 16 studies.^{2,31,32,34,39-41,46,48-50,53,58-60,62} The mean (SD) OS was longest for WLE with RT, CT, and IT (n=2; 56.0 [6.0] months), followed by WLE with CT (n=4; 54.5 [41.0] months); WLE with RT (n=30; 39.7 [41.2] months); WLE alone (n=22; 37.2 [37.3] months); WLE with both RT and CT (n=7; 25.5 [18.7] months); RT with IT (n=2; 20.0 [11.0] months); RT with CT (n=6; 15.7 [6.8] months); and RT alone (n=1; 13 [no SD]) months)(eTable).

T2 Angiosarcoma—There were 105 patients with T2 tumors in 15 studies.^{2,31,32,34,39-41,46,48-50,52,53,57,62} The mean (SD) OS for each treatment modality in descending order was as follows: RT with CT and IT (n=1; 36 [no SD reported] months); RT with CT (n=23; 34.3 [46.3] months); WLE with RT (n=21; 26.3 [23.8] months); WLE with CT (n=8; 21.5 [16.6] months); WLE alone (n=16; 19.8 [15.6] months); WLE with RT and CT (n=14; 19.2 [10.5] months); RT alone (n=17; 10.1 [5.5] months); CT alone (n=2; 6.7 [3.7] months); and WLE with RT, CT, and IT (n=1; 6.0 [no SD] months)(eTable).

Mohs Micrographic Surgery—The use of MMS was only identified in case reports or small observational studies for a total of 9 patients. Five cASs were treated with MMS alone for a mean (SD) OS of 37 (21.5) months, with 4 reporting cAS staging: 2 were T1^58,59 (mean [SD] OS, 37.0 [17.0] months) and 2 were T2 tumors^39,57 (mean [SD] OS, 44.5 [26.5] months). Mohs micrographic surgery with RT was used for 3 tumors (mean [SD] OS, 34.0 [26.9] months); 2 were T1^50,60 (mean [SD] OS, 42.0 [30.0] months) and 1 unreported staging (eTable).⁵⁶ Mohs micrographic surgery with both RT and CT was used in 1 patient (unreported staging; OS, 82 months).⁵¹

Complications

Complications were rare and mainly associated with CT and RT. Four studies reported radiation dermatitis with RT.^53,55,62,63 Two studies reported peripheral neuropathy and myelotoxicity with CT.^35,51 Only 1 study reported poor wound healing due to surgical complications.²⁹

COMMENT

Cutaneous angiosarcomas are rare and have limited treatment guidelines. Surgical excision does appear to be an effective adjunct to nonsurgical treatments, particularly WLE combined with RT, CT, and IT. Although MMS ultimately may be useful for cAS, the limited number and substantial heterogeneity of reported cases precludes definitive conclusions at this time.

Achieving margin control during WLE is associated with higher OS when treating angiosarcoma,^36,46 which is particularly true for T1 tumors where margin control is imperative, and many cases are treated with a combination of WLE and RT. Overall survival times are lower for T2 tumors, as these tumors are larger and most likely have spread; therefore, more aggressive combination treatments were more prevalent. In these cases, complete margin control may be difficult to achieve and may not be as critical to the outcome if another form of adjuvant therapy can be administered promptly.^24,64

When surgery is contraindicated, RT with or without CT was the most commonly reported treatment modality. However, these treatments were notably less effective than when used in combination with surgical resection. The use of RT alone has a recurrence rate reported up to 100% in certain studies, suggesting the need to utilize RT in combination with other modalities.^23,39 It is important to note that RT often is used as monotherapy in palliative treatment, which may indirectly skew survival rates.²

Limitations of the study include a lack of randomized controlled trials. Most reports were retrospective reviews or case series, and tumor staging was sparsely reported. Finally, although MMS may provide utility in the treatment of cAS, the sample size of 9 precluded definitive conclusions from being formed about its efficacy.

CONCLUSION

Cutaneous angiosarcoma is rare and has limited data comparing different treatment modalities. The paucity of data currently limits definitive recommendations; however, both surgical and nonsurgical modalities have demonstrated potential efficacy in the treatment of cAS and may benefit from additional research. Clinicians should consider a multidisciplinary approach for patients with a diagnosis of cAS to tailor treatments on a case-by-case basis.

Cutaneous angiosarcoma (cAS) is a rare malignancy arising from vascular or lymphatic tissue. It classically presents during the sixth or seventh decades of life as a raised purple papule or plaque on the head and neck areas.¹ Primary cAS frequently mimics benign conditions, leading to delays in care. Such delays coupled with the aggressive nature of angiosarcomas leads to a poor prognosis. Five-year survival rates range from 11% to 50%, and more than half of patients die within 1 year of diagnosis.^2-7

Currently, there is no consensus on the most effective treatments, as the rare nature of cAS has made the development of controlled clinical trials difficult. Wide local excision (WLE) is most frequently employed; however, the tumor’s infiltrative growth makes complete resection and negative surgical margins difficult to achieve.⁸ Recently, Mohs micrographic surgery (MMS) has been postulated as a treatment option. The tissue-sparing nature and intraoperative margin control of MMS may provide tumor eradication and cosmesis benefits reported with other cutaneous malignancies.⁹

Nearly all localized cASs are treated with surgical excision with or without adjuvant treatment modalities; however, it is unclear which of these modalities provide a survival benefit. We conducted a systematic review of the literature to compare treatment modalities for localized cAS of the head and neck regions and to compare treatments based on tumor stage.

METHODS

A literature search was performed to identify published studies indexed by MEDLINE, Cochrane Central Register of Controlled Trials (CENTRAL), Embase, and PubMed from January 1, 1977, to May 8, 2020, reporting on cAS and treatment modalities used. The search was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines.⁵ Data extracted included patient demographics, tumor characteristics (including T1 [≤5 cm] and T2 [>5 cm and ≤10 cm] based on the American Joint Committee on Cancer soft tissue sarcoma staging criteria), treatments used, follow-up time, overall survival (OS) rates, and complications.^10,11

Studies were required to (1) include participants with head and neck cAS; (2) report original patient data following cAS treatment with surgical (WLE or MMS) and/or nonsurgical modalities (chemotherapy [CT], radiotherapy [RT], immunotherapy [IT]); (3) report outcome data related to OS rates following treatment; and (4) have articles published in English. Given the rare nature of cAS, there was no limitation on the number of participants needed.

The Newcastle-Ottawa scale for observational studies was used to assess the quality of studies.¹² Higher scores indicate low risk of bias, while lower scores represent high risk of bias.

Continuous data were reported with means and SDs, while categorical variables were reported as percentages. Overall survival means and SDs were compared between treatment modalities using an independent sample t test with P<.05 considered statistically significant. Due to the heterogeneity of the data, a meta-analysis was not reported.

RESULTS

Literature Search and Risk of Bias Assessment

There were 283 manuscripts identified, 56 articles read in full, and 40 articles included in the review (Figure). Among the 16 studies not meeting inclusion criteria, 7 did not provide enough data to isolate head and neck cAS cases,^1,13-18 6 did not report outcomes related to the current review,^19-24 and 3 did not provide enough data to isolate different treatment outcomes.^25-27 Among the included studies, 32 reported use of WLE: WLE alone (n=21)^2,7,11,28-45; WLE with RT (n=24)^{2,3,11,28-31,33-36,38-41,43-51}; WLE with CT (n=7)^{2,31,35,39,41,48,52}; WLE with RT and CT (n=11)^{2,29,31,33-35,39,40,48,52,53}; WLE with RT and IT (n=3)^35,54,55; and WLE with RT, CT, and IT (n=1).⁵³ Nine studies reported MMS: MMS alone (n=5)^39,56-59; MMS with RT (n=3)^32,50,60,61; and MMS with RT and CT (n=1).⁵¹

Risk of bias assessment identified low risk in 3 articles. High risk was identified in 5 case reports,^57-61 and 1 study did not describe patient selection.⁴³ Clayton et al⁵⁶ showed intermediate risk, given the study controlled for 1 factor.

Patient Demographics

A total of 1295 patients were included. The pooled mean age of the patients was 67.5 years (range, 3–88 years), and 64.7% were male. There were 79 cases identified as T1 and 105 as T2. A total of 825 cases were treated using WLE with or without adjuvant therapy, while a total of 9 cases were treated using MMS with and without adjuvant therapies (Table). There were 461 cases treated without surgical excision: RT alone (n=261), CT alone (n=38), IT alone (n=35), RT with CT (n=81), RT with IT (n=34), and RT with CT and IT (n=12)(Table). The median follow-up period across all studies was 23.5 months (range, 1–228 months).

Comparison Between Surgical and Nonsurgical Modalities

Wide Local Excision—Wide local excision (n=825; 63.7%) alone or in combination with other therapies was the most frequently used treatment modality. The mean (SD) OS was longest for WLE with RT, CT, and IT (n=3; 39.3 [24.1]), followed by WLE with RT (n=447; 35.9 [34.3] months), WLE with CT (n=13; 32.4 [30.2] months), WLE alone (n=324; 29.6 [34.1] months), WLE with RT and IT (n=11; 23.5 [4.9] months), and WLE with RT and CT (n=27; 20.7 [13.1] months).

Nonsurgical Modalities—Nonsurgical methods were used less frequently than surgical methods (n=461; 35.6%). The mean (SD) OS time in descending order was as follows: RT with CT and IT (n=12; 34.9 [1.2] months), RT with CT (n=81; 30.4 [37.8] months), IT alone (n=35; 25.7 [no SD reported] months), RT with IT (n=34; 20.5 [8.6] months), CT alone (n=38; 20.1 [15.9] months), and RT alone (n=261; 12.8 [8.3] months).

When comparing mean (SD) OS outcomes between surgical and nonsurgical treatment modalities, only the addition of WLE to RT significantly increased OS when compared with RT alone (WLE, 35.9 [34.3] months; RT alone, 12.8 [8.3] months; P=.001). When WLE was added to CT or both RT and CT, there was no significant difference with OS when compared with CT alone (WLE with CT, 32.4 [30.2] months; CT alone, 20.1 [15.9] months; P=.065); or both RT and CT in combination (WLE with RT and CT, 20.7 [13.1] months; RT and CT, 30.4 [37.8] months; P=.204).

Comparison Between T1 and T2 cAS

T1 Angiosarcoma—There were 79 patients identified as having T1 tumors across 16 studies.^{2,31,32,34,39-41,46,48-50,53,58-60,62} The mean (SD) OS was longest for WLE with RT, CT, and IT (n=2; 56.0 [6.0] months), followed by WLE with CT (n=4; 54.5 [41.0] months); WLE with RT (n=30; 39.7 [41.2] months); WLE alone (n=22; 37.2 [37.3] months); WLE with both RT and CT (n=7; 25.5 [18.7] months); RT with IT (n=2; 20.0 [11.0] months); RT with CT (n=6; 15.7 [6.8] months); and RT alone (n=1; 13 [no SD]) months)(eTable).

T2 Angiosarcoma—There were 105 patients with T2 tumors in 15 studies.^{2,31,32,34,39-41,46,48-50,52,53,57,62} The mean (SD) OS for each treatment modality in descending order was as follows: RT with CT and IT (n=1; 36 [no SD reported] months); RT with CT (n=23; 34.3 [46.3] months); WLE with RT (n=21; 26.3 [23.8] months); WLE with CT (n=8; 21.5 [16.6] months); WLE alone (n=16; 19.8 [15.6] months); WLE with RT and CT (n=14; 19.2 [10.5] months); RT alone (n=17; 10.1 [5.5] months); CT alone (n=2; 6.7 [3.7] months); and WLE with RT, CT, and IT (n=1; 6.0 [no SD] months)(eTable).

Mohs Micrographic Surgery—The use of MMS was only identified in case reports or small observational studies for a total of 9 patients. Five cASs were treated with MMS alone for a mean (SD) OS of 37 (21.5) months, with 4 reporting cAS staging: 2 were T1^58,59 (mean [SD] OS, 37.0 [17.0] months) and 2 were T2 tumors^39,57 (mean [SD] OS, 44.5 [26.5] months). Mohs micrographic surgery with RT was used for 3 tumors (mean [SD] OS, 34.0 [26.9] months); 2 were T1^50,60 (mean [SD] OS, 42.0 [30.0] months) and 1 unreported staging (eTable).⁵⁶ Mohs micrographic surgery with both RT and CT was used in 1 patient (unreported staging; OS, 82 months).⁵¹

Complications

Complications were rare and mainly associated with CT and RT. Four studies reported radiation dermatitis with RT.^53,55,62,63 Two studies reported peripheral neuropathy and myelotoxicity with CT.^35,51 Only 1 study reported poor wound healing due to surgical complications.²⁹

COMMENT

Cutaneous angiosarcomas are rare and have limited treatment guidelines. Surgical excision does appear to be an effective adjunct to nonsurgical treatments, particularly WLE combined with RT, CT, and IT. Although MMS ultimately may be useful for cAS, the limited number and substantial heterogeneity of reported cases precludes definitive conclusions at this time.

Achieving margin control during WLE is associated with higher OS when treating angiosarcoma,^36,46 which is particularly true for T1 tumors where margin control is imperative, and many cases are treated with a combination of WLE and RT. Overall survival times are lower for T2 tumors, as these tumors are larger and most likely have spread; therefore, more aggressive combination treatments were more prevalent. In these cases, complete margin control may be difficult to achieve and may not be as critical to the outcome if another form of adjuvant therapy can be administered promptly.^24,64

When surgery is contraindicated, RT with or without CT was the most commonly reported treatment modality. However, these treatments were notably less effective than when used in combination with surgical resection. The use of RT alone has a recurrence rate reported up to 100% in certain studies, suggesting the need to utilize RT in combination with other modalities.^23,39 It is important to note that RT often is used as monotherapy in palliative treatment, which may indirectly skew survival rates.²

Limitations of the study include a lack of randomized controlled trials. Most reports were retrospective reviews or case series, and tumor staging was sparsely reported. Finally, although MMS may provide utility in the treatment of cAS, the sample size of 9 precluded definitive conclusions from being formed about its efficacy.

CONCLUSION

Cutaneous angiosarcoma is rare and has limited data comparing different treatment modalities. The paucity of data currently limits definitive recommendations; however, both surgical and nonsurgical modalities have demonstrated potential efficacy in the treatment of cAS and may benefit from additional research. Clinicians should consider a multidisciplinary approach for patients with a diagnosis of cAS to tailor treatments on a case-by-case basis.

A genetic sequencing effort identified more patients to be carriers of risk genes for hereditary breast and ovarian cancer or Lynch syndrome than would have been discovered by following existing genetic testing guidelines, according to new research.

The authors of the clinical trial suggest that these guidelines may need to be revised.

Individuals with hereditary breast and ovarian cancer (HBOC) have an 80% lifetime risk of breast cancer and are at greater risk of ovarian cancer, pancreatic cancer, prostate cancer, and melanoma. Those with Lynch syndrome (LS) have an 80% lifetime risk of colorectal cancer, a 60% lifetime risk of endometrial cancer, and heightened risk of upper gastrointestinal, urinary tract, skin, and other tumors, said study coauthor N. Jewel Samadder, MD in a statement.

The National Cancer Control Network has guidelines for determining family risk for colorectal cancer and breast, ovarian, and pancreatic cancer to identify individuals who should be screened for LS and HBOC, but these rely on personal and family health histories.

“These criteria were created at a time when genetic testing was cost prohibitive and thus aimed to identify those at the greatest chance of being a mutation carrier in the absence of population-wide whole-exome sequencing. However, [LS and HBOC] are poorly identified in current practice, and many patients are not aware of their cancer risk,” said Dr. Samadder, professor of medicine and coleader of the precision oncology program at the Mayo Clinic Comprehensive Cancer Center, Phoenix, in the statement.

Whole-exome sequencing covers only protein-coding regions of the genome, which is less than 2% of the total genome but includes more than 85% of known disease-related genetic variants, according to Emily Gay, who presented the trial results (Abstract 5768) on April 18 at the annual meeting of the American Association for Cancer Research.

“In recent years, the cost of whole-exome sequencing has been rapidly decreasing, allowing us to complete this test on saliva samples from thousands, if not tens of thousands of patients covering large populations and large health systems,” said Ms. Gay, a genetic counseling graduate student at the University of Arizona, during her presentation.

She described results from the TAPESTRY clinical trial, with 44,306 participants from Mayo Clinic centers in Arizona, Florida, and Minnesota, who were identified as definitely or likely to be harboring pathogenic mutations and consented to whole-exome sequencing from saliva samples. They used electronic health records to determine whether patients would satisfy the testing criteria from NCCN guidelines.

The researchers identified 1.24% of participants to be carriers of HBOC or LS. Of the HBOC carriers, 62.8% were female, and of the LS carriers, 62.6% were female. The percentages of HBOC and LS carriers who were White were 88.6 and 94.5, respectively. The median age of both groups was 57 years. Of HBOC carriers, 47.3% had personal histories of cancers; for LS carries, the percentage was 44.2.

Of HBOC carriers, 49.1% had been previously unaware of their genetic condition, while an even higher percentage of patients with LS – 59.3% – fell into that category. Thirty-two percent of those with HBOC and 56.2% of those with LS would not have qualified for screening using the relevant NCCN guidelines.

“Most strikingly,” 63.8% of individuals with mutations in the MSH6 gene and 83.7% of those mutations in the PMS2 gene would not have met NCCN criteria, Ms. Gay said.

Having a cancer type not known to be related to a genetic syndrome was a reason for 58.6% of individuals failing to meet NCCN guidelines, while 60.5% did not meet the guidelines because of an insufficient number of relatives known to have a history of cancer, and 63.3% did not because they had no personal history of cancer. Among individuals with a pathogenic mutation who met NCCN criteria, 34% were not aware of their condition.

“This suggests that the NCCN guidelines are underutilized in clinical practice, potentially due to the busy schedule of clinicians or because the complexity of using these criteria,” said Ms. Gay.

The numbers were even more striking among minorities: “There is additional data analysis and research needed in this area, but based on our preliminary findings, we saw that nearly 50% of the individuals who are [part of an underrepresented minority group] did not meet criteria, compared with 32% of the white cohort,” said Ms. Gay.

Asked what new NCCN guidelines should be, Ms. Gay replied: “I think maybe limiting the number of relatives that you have to have with a certain type of cancer, especially as we see families get smaller and smaller, especially in the United States – that family data isn’t necessarily available or as useful. And then also, I think, incorporating in the size of a family into the calculation, so more of maybe a point-based system like we see with other genetic conditions rather than a ‘yes you meet or no, you don’t.’ More of a range to say ‘you fall on the low-risk, medium-risk, or high-risk stage,’” said Ms. Gay.

During the Q&A period, session cochair Andrew Godwin, PhD, who is a professor of molecular oncology and pathology at University of Kansas Medical Center, Kansas City, said he wondered if whole-exome sequencing was capable of picking up cancer risk mutations that standard targeted tests don’t look for.

Dr. Samadder, who was in the audience, answered the question, saying that targeted tests are actually better at picking up some types of mutations like intronic mutations, single-nucleotide polymorphisms, and deletions.

“There are some limitations to whole-exome sequencing. Our estimate here of 1.2% [of participants carrying HBOC or LS mutations] is probably an underestimate. There are additional variants that exome sequencing probably doesn’t pick up easily or as well. That’s why we qualify that exome sequencing is a screening test, not a diagnostic,” he continued.

Ms. Gay and Dr. Samadder have no relevant financial disclosures. Dr. Godwin has financial relationships with Clara Biotech, VITRAC Therapeutics, and Sinochips Diagnostics.

A genetic sequencing effort identified more patients to be carriers of risk genes for hereditary breast and ovarian cancer or Lynch syndrome than would have been discovered by following existing genetic testing guidelines, according to new research.

The authors of the clinical trial suggest that these guidelines may need to be revised.

Individuals with hereditary breast and ovarian cancer (HBOC) have an 80% lifetime risk of breast cancer and are at greater risk of ovarian cancer, pancreatic cancer, prostate cancer, and melanoma. Those with Lynch syndrome (LS) have an 80% lifetime risk of colorectal cancer, a 60% lifetime risk of endometrial cancer, and heightened risk of upper gastrointestinal, urinary tract, skin, and other tumors, said study coauthor N. Jewel Samadder, MD in a statement.

The National Cancer Control Network has guidelines for determining family risk for colorectal cancer and breast, ovarian, and pancreatic cancer to identify individuals who should be screened for LS and HBOC, but these rely on personal and family health histories.

“These criteria were created at a time when genetic testing was cost prohibitive and thus aimed to identify those at the greatest chance of being a mutation carrier in the absence of population-wide whole-exome sequencing. However, [LS and HBOC] are poorly identified in current practice, and many patients are not aware of their cancer risk,” said Dr. Samadder, professor of medicine and coleader of the precision oncology program at the Mayo Clinic Comprehensive Cancer Center, Phoenix, in the statement.

Whole-exome sequencing covers only protein-coding regions of the genome, which is less than 2% of the total genome but includes more than 85% of known disease-related genetic variants, according to Emily Gay, who presented the trial results (Abstract 5768) on April 18 at the annual meeting of the American Association for Cancer Research.

“In recent years, the cost of whole-exome sequencing has been rapidly decreasing, allowing us to complete this test on saliva samples from thousands, if not tens of thousands of patients covering large populations and large health systems,” said Ms. Gay, a genetic counseling graduate student at the University of Arizona, during her presentation.

She described results from the TAPESTRY clinical trial, with 44,306 participants from Mayo Clinic centers in Arizona, Florida, and Minnesota, who were identified as definitely or likely to be harboring pathogenic mutations and consented to whole-exome sequencing from saliva samples. They used electronic health records to determine whether patients would satisfy the testing criteria from NCCN guidelines.

The researchers identified 1.24% of participants to be carriers of HBOC or LS. Of the HBOC carriers, 62.8% were female, and of the LS carriers, 62.6% were female. The percentages of HBOC and LS carriers who were White were 88.6 and 94.5, respectively. The median age of both groups was 57 years. Of HBOC carriers, 47.3% had personal histories of cancers; for LS carries, the percentage was 44.2.

Of HBOC carriers, 49.1% had been previously unaware of their genetic condition, while an even higher percentage of patients with LS – 59.3% – fell into that category. Thirty-two percent of those with HBOC and 56.2% of those with LS would not have qualified for screening using the relevant NCCN guidelines.

“Most strikingly,” 63.8% of individuals with mutations in the MSH6 gene and 83.7% of those mutations in the PMS2 gene would not have met NCCN criteria, Ms. Gay said.

Having a cancer type not known to be related to a genetic syndrome was a reason for 58.6% of individuals failing to meet NCCN guidelines, while 60.5% did not meet the guidelines because of an insufficient number of relatives known to have a history of cancer, and 63.3% did not because they had no personal history of cancer. Among individuals with a pathogenic mutation who met NCCN criteria, 34% were not aware of their condition.

“This suggests that the NCCN guidelines are underutilized in clinical practice, potentially due to the busy schedule of clinicians or because the complexity of using these criteria,” said Ms. Gay.

The numbers were even more striking among minorities: “There is additional data analysis and research needed in this area, but based on our preliminary findings, we saw that nearly 50% of the individuals who are [part of an underrepresented minority group] did not meet criteria, compared with 32% of the white cohort,” said Ms. Gay.

Asked what new NCCN guidelines should be, Ms. Gay replied: “I think maybe limiting the number of relatives that you have to have with a certain type of cancer, especially as we see families get smaller and smaller, especially in the United States – that family data isn’t necessarily available or as useful. And then also, I think, incorporating in the size of a family into the calculation, so more of maybe a point-based system like we see with other genetic conditions rather than a ‘yes you meet or no, you don’t.’ More of a range to say ‘you fall on the low-risk, medium-risk, or high-risk stage,’” said Ms. Gay.

During the Q&A period, session cochair Andrew Godwin, PhD, who is a professor of molecular oncology and pathology at University of Kansas Medical Center, Kansas City, said he wondered if whole-exome sequencing was capable of picking up cancer risk mutations that standard targeted tests don’t look for.

Dr. Samadder, who was in the audience, answered the question, saying that targeted tests are actually better at picking up some types of mutations like intronic mutations, single-nucleotide polymorphisms, and deletions.

“There are some limitations to whole-exome sequencing. Our estimate here of 1.2% [of participants carrying HBOC or LS mutations] is probably an underestimate. There are additional variants that exome sequencing probably doesn’t pick up easily or as well. That’s why we qualify that exome sequencing is a screening test, not a diagnostic,” he continued.

Ms. Gay and Dr. Samadder have no relevant financial disclosures. Dr. Godwin has financial relationships with Clara Biotech, VITRAC Therapeutics, and Sinochips Diagnostics.

A genetic sequencing effort identified more patients to be carriers of risk genes for hereditary breast and ovarian cancer or Lynch syndrome than would have been discovered by following existing genetic testing guidelines, according to new research.

The authors of the clinical trial suggest that these guidelines may need to be revised.

Individuals with hereditary breast and ovarian cancer (HBOC) have an 80% lifetime risk of breast cancer and are at greater risk of ovarian cancer, pancreatic cancer, prostate cancer, and melanoma. Those with Lynch syndrome (LS) have an 80% lifetime risk of colorectal cancer, a 60% lifetime risk of endometrial cancer, and heightened risk of upper gastrointestinal, urinary tract, skin, and other tumors, said study coauthor N. Jewel Samadder, MD in a statement.

The National Cancer Control Network has guidelines for determining family risk for colorectal cancer and breast, ovarian, and pancreatic cancer to identify individuals who should be screened for LS and HBOC, but these rely on personal and family health histories.

“These criteria were created at a time when genetic testing was cost prohibitive and thus aimed to identify those at the greatest chance of being a mutation carrier in the absence of population-wide whole-exome sequencing. However, [LS and HBOC] are poorly identified in current practice, and many patients are not aware of their cancer risk,” said Dr. Samadder, professor of medicine and coleader of the precision oncology program at the Mayo Clinic Comprehensive Cancer Center, Phoenix, in the statement.

Whole-exome sequencing covers only protein-coding regions of the genome, which is less than 2% of the total genome but includes more than 85% of known disease-related genetic variants, according to Emily Gay, who presented the trial results (Abstract 5768) on April 18 at the annual meeting of the American Association for Cancer Research.

“In recent years, the cost of whole-exome sequencing has been rapidly decreasing, allowing us to complete this test on saliva samples from thousands, if not tens of thousands of patients covering large populations and large health systems,” said Ms. Gay, a genetic counseling graduate student at the University of Arizona, during her presentation.

She described results from the TAPESTRY clinical trial, with 44,306 participants from Mayo Clinic centers in Arizona, Florida, and Minnesota, who were identified as definitely or likely to be harboring pathogenic mutations and consented to whole-exome sequencing from saliva samples. They used electronic health records to determine whether patients would satisfy the testing criteria from NCCN guidelines.

The researchers identified 1.24% of participants to be carriers of HBOC or LS. Of the HBOC carriers, 62.8% were female, and of the LS carriers, 62.6% were female. The percentages of HBOC and LS carriers who were White were 88.6 and 94.5, respectively. The median age of both groups was 57 years. Of HBOC carriers, 47.3% had personal histories of cancers; for LS carries, the percentage was 44.2.

Of HBOC carriers, 49.1% had been previously unaware of their genetic condition, while an even higher percentage of patients with LS – 59.3% – fell into that category. Thirty-two percent of those with HBOC and 56.2% of those with LS would not have qualified for screening using the relevant NCCN guidelines.

“Most strikingly,” 63.8% of individuals with mutations in the MSH6 gene and 83.7% of those mutations in the PMS2 gene would not have met NCCN criteria, Ms. Gay said.

Having a cancer type not known to be related to a genetic syndrome was a reason for 58.6% of individuals failing to meet NCCN guidelines, while 60.5% did not meet the guidelines because of an insufficient number of relatives known to have a history of cancer, and 63.3% did not because they had no personal history of cancer. Among individuals with a pathogenic mutation who met NCCN criteria, 34% were not aware of their condition.

“This suggests that the NCCN guidelines are underutilized in clinical practice, potentially due to the busy schedule of clinicians or because the complexity of using these criteria,” said Ms. Gay.

The numbers were even more striking among minorities: “There is additional data analysis and research needed in this area, but based on our preliminary findings, we saw that nearly 50% of the individuals who are [part of an underrepresented minority group] did not meet criteria, compared with 32% of the white cohort,” said Ms. Gay.

Asked what new NCCN guidelines should be, Ms. Gay replied: “I think maybe limiting the number of relatives that you have to have with a certain type of cancer, especially as we see families get smaller and smaller, especially in the United States – that family data isn’t necessarily available or as useful. And then also, I think, incorporating in the size of a family into the calculation, so more of maybe a point-based system like we see with other genetic conditions rather than a ‘yes you meet or no, you don’t.’ More of a range to say ‘you fall on the low-risk, medium-risk, or high-risk stage,’” said Ms. Gay.

During the Q&A period, session cochair Andrew Godwin, PhD, who is a professor of molecular oncology and pathology at University of Kansas Medical Center, Kansas City, said he wondered if whole-exome sequencing was capable of picking up cancer risk mutations that standard targeted tests don’t look for.

Dr. Samadder, who was in the audience, answered the question, saying that targeted tests are actually better at picking up some types of mutations like intronic mutations, single-nucleotide polymorphisms, and deletions.

“There are some limitations to whole-exome sequencing. Our estimate here of 1.2% [of participants carrying HBOC or LS mutations] is probably an underestimate. There are additional variants that exome sequencing probably doesn’t pick up easily or as well. That’s why we qualify that exome sequencing is a screening test, not a diagnostic,” he continued.

Ms. Gay and Dr. Samadder have no relevant financial disclosures. Dr. Godwin has financial relationships with Clara Biotech, VITRAC Therapeutics, and Sinochips Diagnostics.

To the Editor:

Vitiligolike depigmentation has been known to develop around the sites of origin of melanoma or more rarely in patients treated with antimelanoma therapy.¹ Vitiligo is characterized by white patchy depigmentation of the skin caused by the loss of functional melanocytes from the epidermis. The exact mechanisms of disease are unknown and multifactorial; however, autoimmunity plays a central role. Interferon gamma (IFN-γ), C-X-C chemokine ligand 10, and IL-22 have been identified as key mediators in an inflammatory cascade leading to the stimulation of the innate immune response against melanocyte antigens.^2,3 Research suggests melanoma-associated vitiligolike leukoderma also results from an immune reaction directed against antigenic determinants shared by both normal and malignant melanocytes.³ Vitiligolike lesions have been associated with the use of immunomodulatory agents such as nivolumab, a fully humanized monoclonal IgG4 antibody, which blocks the programmed cell death protein 1 (PD-1) receptor that normally is expressed on T cells during the effector phase of T-cell activation.^4,5 In the tumor microenvironment, the PD-1 receptor is stimulated, leading to downregulation of the T-cell effector function and destruction of T cells.⁵ Due to T-cell apoptosis and consequent suppression of the immune response, tumorigenesis continues. By inhibiting the PD-1 receptor, nivolumab increases the number of active T cells and antitumor response. However, the distressing side effect of vitiligolike depigmentation has been reported in 15% to 25% of treated patients.⁶

In a meta-analysis by Teulings et al,⁷ patients with new-onset vitiligo and malignant melanoma demonstrated a 2-fold decrease in cancer progression and a 4-fold decreased risk for death vs patients without vitiligo development. Thus, in patients with melanoma, vitiligolike depigmentation should be considered a good prognostic indicator as well as a visible sign of spontaneous or therapy-induced antihumoral immune response against melanocyte differentiation antigens, as it is associated with a notable survival benefit in patients receiving immunotherapy for metastatic melanoma.³ We describe a case of diffuse vitiligolike depigmentation that developed suddenly during nivolumab treatment, causing much distress to the patient.

A 75-year-old woman presented to the clinic with a chief concern of sudden diffuse skin discoloration primarily affecting the face, hands, and extremities of 3 weeks’ duration. She had a medical history of metastatic melanoma—the site of the primary melanoma was never identified—and she was undergoing immune-modulating therapy with nivolumab. She was on her fifth month of treatment and was experiencing a robust therapeutic response with a reported 100% clearance of the metastatic melanoma as observed on a positron emission tomography scan. The patchy depigmentation of skin was causing her much distress. Physical examination revealed diffuse patches of hypopigmentation on the trunk, face, and extremities (Figure). Shave biopsies of the right lateral arm demonstrated changes consistent with vitiligo, with an adjacent biopsy illustrating normal skin characteristics. Triamcinolone ointment 0.1% was initiated, with instruction to apply it to affected areas twice daily for 2 weeks. However, there was no improvement, and she discontinued use.

At 3-month follow-up, the depigmentation persisted, prompting a trial of hydroquinone cream 4% to be used sparingly in cosmetically sensitive areas such as the face and dorsal aspects of the hands. Additionally, diligent photoprotection was advised. Upon re-evaluation 9 months later, the patient remained in cancer remission, continued nivolumab therapy, and reported improvement in the hypopigmentation with a more even skin color with topical hydroquinone use. She no longer noticed starkly contrasting hypopigmented patches.

Vitiligo is a benign skin condition characterized by white depigmented macules and patches. The key feature of the disorder is loss of functional melanocytes from the cutaneous epidermis and sometimes from the hair follicles, with various theories on the cause. It has been suggested that the disease is multifactorial, involving both genetics and environmental factors.² Regardless of the exact mechanism, the result is always the same: loss of melanin pigment in cells due to loss of melanocytes.

Autoimmunity plays a central role in the causation of vitiligo and was first suspected as a possible cause due to the association of vitiligo with several other autoimmune disorders, such as thyroiditis.⁸ An epidemiological survey from the United Kingdom and North America (N=2624) found that 19.4% of vitiligo patients aged 20 years or older also reported a clinical history of autoimmune thyroid disease compared with 2.4% of the overall White population of the same age.⁹ Interferon gamma, C-X-C chemokine ligand 10, and IL-22 receptors stimulate the innate immune response, resulting in an overactive danger signaling cascade, which leads to proinflammatory signals against melanocyte antigens.^2,3 The adaptive immune system also participates in the progression of vitiligo by activating dermal dendritic cells to attack melanocytes along with melanocyte-specific cytotoxic T cells.

Immunomodulatory agents utilized in the treatment of metastatic melanoma have been linked to vitiligolike depigmentation. In those receiving PD-1 immunotherapy for metastatic melanoma, vitiligolike lesions have been reported in 15% to 25% of patients.⁶ Typically, the PD-1 molecule has a regulatory function on effector T cells. Interaction of the PD-1 receptor with its ligands occurs primarily in peripheral tissue causing apoptosis and downregulation of effector T cells with the goal of decreasing collateral damage to surrounding tissues by active T cells.⁵ In the tumor microenvironment, however, suppression of the host’s immune response is enhanced by aberrant stimulation of the PD-1 receptor, causing downregulation of the T-cell effector function, T-cell destruction, and apoptosis, which results in continued tumor growth. Nivolumab, a fully humanized monoclonal IgG4 antibody, selectively inhibits the PD-1 receptor, disrupting the regulator pathway that would typically end in T-cell destruction.⁵ Accordingly, the population of active T cells is increased along with the antitumor response.^4,10 Nivolumab exhibits success as an immunotherapeutic agent, with an overall survival rate in patients with metastatic melanoma undergoing nivolumab therapy of 41% to 42% at 3 years and 35% at 5 years.¹¹ However, therapeutic manipulation of the host’s immune response does not come without a cost. Vitiligolike lesions have been reported in up to a quarter of patients receiving PD-1 immunotherapy for metastatic melanoma.⁶

The relationship between vitiligolike depigmentation and melanoma can be explained by the immune activation against antigens associated with melanoma that also are expressed by normal melanocytes. In clinical observations of patients with melanoma and patients with vitiligo, antibodies to human melanocyte antigens were present in 80% (24/30) of patients vs 7% (2/28) in the control group.¹² The autoimmune response results from a cross-reaction of melanoma cells that share the same antigens as normal melanocytes, such as melanoma antigen recognized by T cells 1 (MART-1), gp100, and tyrosinase.^13,14

Development of vitiligolike depigmentation in patients with metastatic melanoma treated with nivolumab has been reported to occur between 2 and 15 months after the start of PD-1 therapy. This side effect of treatment correlates with favorable clinical outcomes.^15,16 Enhancing immune recognition of melanocytes in patients with melanoma confers a survival advantage, as studies by Koh et al¹⁷ and Norlund et al¹⁸ involving patients who developed vitiligolike hypopigmentation associated with malignant melanoma indicated a better prognosis than for those without hypopigmentation. The 5-year survival rate of patients with both malignant melanoma and vitiligo was reported as 60% to 67% when it was estimated that only 30% to 50% of patients should have survived that duration of time.^17,18 Similarly, a systematic review of patients with melanoma stages III and IV reported that those with associated hypopigmentation had a 2- to 4-fold decreased risk of disease progression and death compared to patients without depigmentation.⁷

Use of traditional treatment therapies for vitiligo is based on the ability of the therapy to suppress the immune system. However, in patients with metastatic melanoma undergoing immune-modulating cancer therapies, traditional treatment options may counter the antitumor effects of the targeted immunotherapies and should be used with caution. Our patient displayed improvement in the appearance of her starkly contrasting hypopigmented patches with the use of hydroquinone cream 4%, which induced necrotic death of melanocytes by inhibiting the conversion of L-3,4-dihydroxyphenylalanine to melanin by tyrosinase.¹⁹ The effect achieved by using topical hydroquinone 4% was a lighter skin appearance in areas of application.

There is no cure for vitiligo, and although it is a benign condition, it can negatively impact a patient's quality of life. In some countries, vitiligo is confused with leprosy, resulting in a social stigma attached to the diagnosis. Many patients are frightened or embarrassed by the diagnosis of vitiligo and its effects, and they often experience discrimination.² Patients with vitiligo also experience more psychological difficulties such as depression.²⁰ The unpredictability of vitiligo is associated with negative emotions including fear of spreading the lesions, shame, insecurity, and sadness.²¹ Supportive care measures, including psychological support and counseling, are recommended. Additionally, upon initiation of anti–PD-1 therapies, expectations should be discussed with patients concerning the possibilities of depigmentation and associated treatment results. Although the occurrence of vitiligo may cause the patient concern, it should be communicated that its presence is a positive indicator of a vigorous antimelanoma immunity and an increased survival rate.⁷

Vitiligolike depigmentation is a known rare adverse effect of nivolumab treatment. Although aesthetically unfavorable for the patient, the development of vitiligolike lesions while undergoing immunotherapy for melanoma may be a sign of a promising clinical outcome due to an effective immune response to melanoma antigens. Our patient remains in remission without any evidence of melanoma after 9 months of therapy, which offers support for a promising outcome for melanoma patients who experience vitiligolike depigmentation.

To the Editor:

Vitiligolike depigmentation has been known to develop around the sites of origin of melanoma or more rarely in patients treated with antimelanoma therapy.¹ Vitiligo is characterized by white patchy depigmentation of the skin caused by the loss of functional melanocytes from the epidermis. The exact mechanisms of disease are unknown and multifactorial; however, autoimmunity plays a central role. Interferon gamma (IFN-γ), C-X-C chemokine ligand 10, and IL-22 have been identified as key mediators in an inflammatory cascade leading to the stimulation of the innate immune response against melanocyte antigens.^2,3 Research suggests melanoma-associated vitiligolike leukoderma also results from an immune reaction directed against antigenic determinants shared by both normal and malignant melanocytes.³ Vitiligolike lesions have been associated with the use of immunomodulatory agents such as nivolumab, a fully humanized monoclonal IgG4 antibody, which blocks the programmed cell death protein 1 (PD-1) receptor that normally is expressed on T cells during the effector phase of T-cell activation.^4,5 In the tumor microenvironment, the PD-1 receptor is stimulated, leading to downregulation of the T-cell effector function and destruction of T cells.⁵ Due to T-cell apoptosis and consequent suppression of the immune response, tumorigenesis continues. By inhibiting the PD-1 receptor, nivolumab increases the number of active T cells and antitumor response. However, the distressing side effect of vitiligolike depigmentation has been reported in 15% to 25% of treated patients.⁶

In a meta-analysis by Teulings et al,⁷ patients with new-onset vitiligo and malignant melanoma demonstrated a 2-fold decrease in cancer progression and a 4-fold decreased risk for death vs patients without vitiligo development. Thus, in patients with melanoma, vitiligolike depigmentation should be considered a good prognostic indicator as well as a visible sign of spontaneous or therapy-induced antihumoral immune response against melanocyte differentiation antigens, as it is associated with a notable survival benefit in patients receiving immunotherapy for metastatic melanoma.³ We describe a case of diffuse vitiligolike depigmentation that developed suddenly during nivolumab treatment, causing much distress to the patient.

A 75-year-old woman presented to the clinic with a chief concern of sudden diffuse skin discoloration primarily affecting the face, hands, and extremities of 3 weeks’ duration. She had a medical history of metastatic melanoma—the site of the primary melanoma was never identified—and she was undergoing immune-modulating therapy with nivolumab. She was on her fifth month of treatment and was experiencing a robust therapeutic response with a reported 100% clearance of the metastatic melanoma as observed on a positron emission tomography scan. The patchy depigmentation of skin was causing her much distress. Physical examination revealed diffuse patches of hypopigmentation on the trunk, face, and extremities (Figure). Shave biopsies of the right lateral arm demonstrated changes consistent with vitiligo, with an adjacent biopsy illustrating normal skin characteristics. Triamcinolone ointment 0.1% was initiated, with instruction to apply it to affected areas twice daily for 2 weeks. However, there was no improvement, and she discontinued use.

At 3-month follow-up, the depigmentation persisted, prompting a trial of hydroquinone cream 4% to be used sparingly in cosmetically sensitive areas such as the face and dorsal aspects of the hands. Additionally, diligent photoprotection was advised. Upon re-evaluation 9 months later, the patient remained in cancer remission, continued nivolumab therapy, and reported improvement in the hypopigmentation with a more even skin color with topical hydroquinone use. She no longer noticed starkly contrasting hypopigmented patches.

Vitiligo is a benign skin condition characterized by white depigmented macules and patches. The key feature of the disorder is loss of functional melanocytes from the cutaneous epidermis and sometimes from the hair follicles, with various theories on the cause. It has been suggested that the disease is multifactorial, involving both genetics and environmental factors.² Regardless of the exact mechanism, the result is always the same: loss of melanin pigment in cells due to loss of melanocytes.

Autoimmunity plays a central role in the causation of vitiligo and was first suspected as a possible cause due to the association of vitiligo with several other autoimmune disorders, such as thyroiditis.⁸ An epidemiological survey from the United Kingdom and North America (N=2624) found that 19.4% of vitiligo patients aged 20 years or older also reported a clinical history of autoimmune thyroid disease compared with 2.4% of the overall White population of the same age.⁹ Interferon gamma, C-X-C chemokine ligand 10, and IL-22 receptors stimulate the innate immune response, resulting in an overactive danger signaling cascade, which leads to proinflammatory signals against melanocyte antigens.^2,3 The adaptive immune system also participates in the progression of vitiligo by activating dermal dendritic cells to attack melanocytes along with melanocyte-specific cytotoxic T cells.

Immunomodulatory agents utilized in the treatment of metastatic melanoma have been linked to vitiligolike depigmentation. In those receiving PD-1 immunotherapy for metastatic melanoma, vitiligolike lesions have been reported in 15% to 25% of patients.⁶ Typically, the PD-1 molecule has a regulatory function on effector T cells. Interaction of the PD-1 receptor with its ligands occurs primarily in peripheral tissue causing apoptosis and downregulation of effector T cells with the goal of decreasing collateral damage to surrounding tissues by active T cells.⁵ In the tumor microenvironment, however, suppression of the host’s immune response is enhanced by aberrant stimulation of the PD-1 receptor, causing downregulation of the T-cell effector function, T-cell destruction, and apoptosis, which results in continued tumor growth. Nivolumab, a fully humanized monoclonal IgG4 antibody, selectively inhibits the PD-1 receptor, disrupting the regulator pathway that would typically end in T-cell destruction.⁵ Accordingly, the population of active T cells is increased along with the antitumor response.^4,10 Nivolumab exhibits success as an immunotherapeutic agent, with an overall survival rate in patients with metastatic melanoma undergoing nivolumab therapy of 41% to 42% at 3 years and 35% at 5 years.¹¹ However, therapeutic manipulation of the host’s immune response does not come without a cost. Vitiligolike lesions have been reported in up to a quarter of patients receiving PD-1 immunotherapy for metastatic melanoma.⁶

The relationship between vitiligolike depigmentation and melanoma can be explained by the immune activation against antigens associated with melanoma that also are expressed by normal melanocytes. In clinical observations of patients with melanoma and patients with vitiligo, antibodies to human melanocyte antigens were present in 80% (24/30) of patients vs 7% (2/28) in the control group.¹² The autoimmune response results from a cross-reaction of melanoma cells that share the same antigens as normal melanocytes, such as melanoma antigen recognized by T cells 1 (MART-1), gp100, and tyrosinase.^13,14

Development of vitiligolike depigmentation in patients with metastatic melanoma treated with nivolumab has been reported to occur between 2 and 15 months after the start of PD-1 therapy. This side effect of treatment correlates with favorable clinical outcomes.^15,16 Enhancing immune recognition of melanocytes in patients with melanoma confers a survival advantage, as studies by Koh et al¹⁷ and Norlund et al¹⁸ involving patients who developed vitiligolike hypopigmentation associated with malignant melanoma indicated a better prognosis than for those without hypopigmentation. The 5-year survival rate of patients with both malignant melanoma and vitiligo was reported as 60% to 67% when it was estimated that only 30% to 50% of patients should have survived that duration of time.^17,18 Similarly, a systematic review of patients with melanoma stages III and IV reported that those with associated hypopigmentation had a 2- to 4-fold decreased risk of disease progression and death compared to patients without depigmentation.⁷

Use of traditional treatment therapies for vitiligo is based on the ability of the therapy to suppress the immune system. However, in patients with metastatic melanoma undergoing immune-modulating cancer therapies, traditional treatment options may counter the antitumor effects of the targeted immunotherapies and should be used with caution. Our patient displayed improvement in the appearance of her starkly contrasting hypopigmented patches with the use of hydroquinone cream 4%, which induced necrotic death of melanocytes by inhibiting the conversion of L-3,4-dihydroxyphenylalanine to melanin by tyrosinase.¹⁹ The effect achieved by using topical hydroquinone 4% was a lighter skin appearance in areas of application.

There is no cure for vitiligo, and although it is a benign condition, it can negatively impact a patient's quality of life. In some countries, vitiligo is confused with leprosy, resulting in a social stigma attached to the diagnosis. Many patients are frightened or embarrassed by the diagnosis of vitiligo and its effects, and they often experience discrimination.² Patients with vitiligo also experience more psychological difficulties such as depression.²⁰ The unpredictability of vitiligo is associated with negative emotions including fear of spreading the lesions, shame, insecurity, and sadness.²¹ Supportive care measures, including psychological support and counseling, are recommended. Additionally, upon initiation of anti–PD-1 therapies, expectations should be discussed with patients concerning the possibilities of depigmentation and associated treatment results. Although the occurrence of vitiligo may cause the patient concern, it should be communicated that its presence is a positive indicator of a vigorous antimelanoma immunity and an increased survival rate.⁷

Vitiligolike depigmentation is a known rare adverse effect of nivolumab treatment. Although aesthetically unfavorable for the patient, the development of vitiligolike lesions while undergoing immunotherapy for melanoma may be a sign of a promising clinical outcome due to an effective immune response to melanoma antigens. Our patient remains in remission without any evidence of melanoma after 9 months of therapy, which offers support for a promising outcome for melanoma patients who experience vitiligolike depigmentation.

To the Editor:

Vitiligolike depigmentation has been known to develop around the sites of origin of melanoma or more rarely in patients treated with antimelanoma therapy.¹ Vitiligo is characterized by white patchy depigmentation of the skin caused by the loss of functional melanocytes from the epidermis. The exact mechanisms of disease are unknown and multifactorial; however, autoimmunity plays a central role. Interferon gamma (IFN-γ), C-X-C chemokine ligand 10, and IL-22 have been identified as key mediators in an inflammatory cascade leading to the stimulation of the innate immune response against melanocyte antigens.^2,3 Research suggests melanoma-associated vitiligolike leukoderma also results from an immune reaction directed against antigenic determinants shared by both normal and malignant melanocytes.³ Vitiligolike lesions have been associated with the use of immunomodulatory agents such as nivolumab, a fully humanized monoclonal IgG4 antibody, which blocks the programmed cell death protein 1 (PD-1) receptor that normally is expressed on T cells during the effector phase of T-cell activation.^4,5 In the tumor microenvironment, the PD-1 receptor is stimulated, leading to downregulation of the T-cell effector function and destruction of T cells.⁵ Due to T-cell apoptosis and consequent suppression of the immune response, tumorigenesis continues. By inhibiting the PD-1 receptor, nivolumab increases the number of active T cells and antitumor response. However, the distressing side effect of vitiligolike depigmentation has been reported in 15% to 25% of treated patients.⁶

In a meta-analysis by Teulings et al,⁷ patients with new-onset vitiligo and malignant melanoma demonstrated a 2-fold decrease in cancer progression and a 4-fold decreased risk for death vs patients without vitiligo development. Thus, in patients with melanoma, vitiligolike depigmentation should be considered a good prognostic indicator as well as a visible sign of spontaneous or therapy-induced antihumoral immune response against melanocyte differentiation antigens, as it is associated with a notable survival benefit in patients receiving immunotherapy for metastatic melanoma.³ We describe a case of diffuse vitiligolike depigmentation that developed suddenly during nivolumab treatment, causing much distress to the patient.

A 75-year-old woman presented to the clinic with a chief concern of sudden diffuse skin discoloration primarily affecting the face, hands, and extremities of 3 weeks’ duration. She had a medical history of metastatic melanoma—the site of the primary melanoma was never identified—and she was undergoing immune-modulating therapy with nivolumab. She was on her fifth month of treatment and was experiencing a robust therapeutic response with a reported 100% clearance of the metastatic melanoma as observed on a positron emission tomography scan. The patchy depigmentation of skin was causing her much distress. Physical examination revealed diffuse patches of hypopigmentation on the trunk, face, and extremities (Figure). Shave biopsies of the right lateral arm demonstrated changes consistent with vitiligo, with an adjacent biopsy illustrating normal skin characteristics. Triamcinolone ointment 0.1% was initiated, with instruction to apply it to affected areas twice daily for 2 weeks. However, there was no improvement, and she discontinued use.

At 3-month follow-up, the depigmentation persisted, prompting a trial of hydroquinone cream 4% to be used sparingly in cosmetically sensitive areas such as the face and dorsal aspects of the hands. Additionally, diligent photoprotection was advised. Upon re-evaluation 9 months later, the patient remained in cancer remission, continued nivolumab therapy, and reported improvement in the hypopigmentation with a more even skin color with topical hydroquinone use. She no longer noticed starkly contrasting hypopigmented patches.

Vitiligo is a benign skin condition characterized by white depigmented macules and patches. The key feature of the disorder is loss of functional melanocytes from the cutaneous epidermis and sometimes from the hair follicles, with various theories on the cause. It has been suggested that the disease is multifactorial, involving both genetics and environmental factors.² Regardless of the exact mechanism, the result is always the same: loss of melanin pigment in cells due to loss of melanocytes.

Autoimmunity plays a central role in the causation of vitiligo and was first suspected as a possible cause due to the association of vitiligo with several other autoimmune disorders, such as thyroiditis.⁸ An epidemiological survey from the United Kingdom and North America (N=2624) found that 19.4% of vitiligo patients aged 20 years or older also reported a clinical history of autoimmune thyroid disease compared with 2.4% of the overall White population of the same age.⁹ Interferon gamma, C-X-C chemokine ligand 10, and IL-22 receptors stimulate the innate immune response, resulting in an overactive danger signaling cascade, which leads to proinflammatory signals against melanocyte antigens.^2,3 The adaptive immune system also participates in the progression of vitiligo by activating dermal dendritic cells to attack melanocytes along with melanocyte-specific cytotoxic T cells.

Immunomodulatory agents utilized in the treatment of metastatic melanoma have been linked to vitiligolike depigmentation. In those receiving PD-1 immunotherapy for metastatic melanoma, vitiligolike lesions have been reported in 15% to 25% of patients.⁶ Typically, the PD-1 molecule has a regulatory function on effector T cells. Interaction of the PD-1 receptor with its ligands occurs primarily in peripheral tissue causing apoptosis and downregulation of effector T cells with the goal of decreasing collateral damage to surrounding tissues by active T cells.⁵ In the tumor microenvironment, however, suppression of the host’s immune response is enhanced by aberrant stimulation of the PD-1 receptor, causing downregulation of the T-cell effector function, T-cell destruction, and apoptosis, which results in continued tumor growth. Nivolumab, a fully humanized monoclonal IgG4 antibody, selectively inhibits the PD-1 receptor, disrupting the regulator pathway that would typically end in T-cell destruction.⁵ Accordingly, the population of active T cells is increased along with the antitumor response.^4,10 Nivolumab exhibits success as an immunotherapeutic agent, with an overall survival rate in patients with metastatic melanoma undergoing nivolumab therapy of 41% to 42% at 3 years and 35% at 5 years.¹¹ However, therapeutic manipulation of the host’s immune response does not come without a cost. Vitiligolike lesions have been reported in up to a quarter of patients receiving PD-1 immunotherapy for metastatic melanoma.⁶

The relationship between vitiligolike depigmentation and melanoma can be explained by the immune activation against antigens associated with melanoma that also are expressed by normal melanocytes. In clinical observations of patients with melanoma and patients with vitiligo, antibodies to human melanocyte antigens were present in 80% (24/30) of patients vs 7% (2/28) in the control group.¹² The autoimmune response results from a cross-reaction of melanoma cells that share the same antigens as normal melanocytes, such as melanoma antigen recognized by T cells 1 (MART-1), gp100, and tyrosinase.^13,14

Development of vitiligolike depigmentation in patients with metastatic melanoma treated with nivolumab has been reported to occur between 2 and 15 months after the start of PD-1 therapy. This side effect of treatment correlates with favorable clinical outcomes.^15,16 Enhancing immune recognition of melanocytes in patients with melanoma confers a survival advantage, as studies by Koh et al¹⁷ and Norlund et al¹⁸ involving patients who developed vitiligolike hypopigmentation associated with malignant melanoma indicated a better prognosis than for those without hypopigmentation. The 5-year survival rate of patients with both malignant melanoma and vitiligo was reported as 60% to 67% when it was estimated that only 30% to 50% of patients should have survived that duration of time.^17,18 Similarly, a systematic review of patients with melanoma stages III and IV reported that those with associated hypopigmentation had a 2- to 4-fold decreased risk of disease progression and death compared to patients without depigmentation.⁷

Use of traditional treatment therapies for vitiligo is based on the ability of the therapy to suppress the immune system. However, in patients with metastatic melanoma undergoing immune-modulating cancer therapies, traditional treatment options may counter the antitumor effects of the targeted immunotherapies and should be used with caution. Our patient displayed improvement in the appearance of her starkly contrasting hypopigmented patches with the use of hydroquinone cream 4%, which induced necrotic death of melanocytes by inhibiting the conversion of L-3,4-dihydroxyphenylalanine to melanin by tyrosinase.¹⁹ The effect achieved by using topical hydroquinone 4% was a lighter skin appearance in areas of application.

There is no cure for vitiligo, and although it is a benign condition, it can negatively impact a patient's quality of life. In some countries, vitiligo is confused with leprosy, resulting in a social stigma attached to the diagnosis. Many patients are frightened or embarrassed by the diagnosis of vitiligo and its effects, and they often experience discrimination.² Patients with vitiligo also experience more psychological difficulties such as depression.²⁰ The unpredictability of vitiligo is associated with negative emotions including fear of spreading the lesions, shame, insecurity, and sadness.²¹ Supportive care measures, including psychological support and counseling, are recommended. Additionally, upon initiation of anti–PD-1 therapies, expectations should be discussed with patients concerning the possibilities of depigmentation and associated treatment results. Although the occurrence of vitiligo may cause the patient concern, it should be communicated that its presence is a positive indicator of a vigorous antimelanoma immunity and an increased survival rate.⁷

Vitiligolike depigmentation is a known rare adverse effect of nivolumab treatment. Although aesthetically unfavorable for the patient, the development of vitiligolike lesions while undergoing immunotherapy for melanoma may be a sign of a promising clinical outcome due to an effective immune response to melanoma antigens. Our patient remains in remission without any evidence of melanoma after 9 months of therapy, which offers support for a promising outcome for melanoma patients who experience vitiligolike depigmentation.

To the Editor:

A collision tumor is the coexistence of 2 discrete tumors in the same neoplasm, possibly comprising a malignant tumor and a benign tumor, and thereby complicating appropriate diagnosis and treatment. We present a case of a basal cell carcinoma (BCC) of the scalp that was later found to be in collision with an apocrine hidrocystoma that might have arisen from a nevus sebaceus. Although rare, BCC can coexist with apocrine hidrocystoma. Jayaprakasam and Rene¹ reported a case of a collision tumor containing BCC and hidrocystoma on the eyelid.¹ We present a case of a BCC on the scalp that was later found to be in collision with an apocrine hidrocystoma that possibly arose from a nevus sebaceus.

A 92-year-old Black woman with a biopsy-confirmed primary BCC of the left parietal scalp presented for Mohs micrographic surgery. The pathology report from an outside facility was reviewed. The initial diagnosis had been made with 2 punch biopsies from separate areas of the large nodule—one consistent with nodular and pigmented BCC (Figure 1), and the other revealed nodular ulcerated BCC. Physical examination prior to Mohs surgery revealed a mobile, flesh-colored, 6.2×6.0-cm nodule with minimal overlying hair on the left parietal scalp (Figure 2). During stage-I processing by the histopathology laboratory, large cystic structures were encountered; en face frozen sections showed a cystic tumor. Excised tissue was submitted for permanent processing to aid in diagnosis; the initial diagnostic biopsy slides were requested from the outside facility for review.

The initial diagnostic biopsy slides were reviewed and found to be consistent with nodular and pigmented BCC, as previously reported. Findings from hematoxylin and eosin staining of tissue obtained from Mohs sections were consistent with a combined neoplasm comprising BCC (Figure 3A) and apocrine hidrocystoma (Figure 3B). In addition, one section was characterized by acanthosis, papillomatosis, and sebaceous glands—similar to findings that are seen in a nevus sebaceus (Figure 3C).

The BCC was cleared after stage I; the final wound size was 7×6.6 cm. Although benign apocrine hidrocystoma was still evident at the margin, further excision was not performed at the request of the patient and her family. Partial primary wound closure was performed with pulley sutures. A xenograft was placed over the unclosed central portion. The wound was permitted to heal by second intention.

The clinical differential diagnosis of a scalp nodule includes a pilar cyst, BCC, squamous cell carcinoma, melanoma, cutaneous metastasis, adnexal tumor, atypical fibroxanthoma, and collision tumor. A collision tumor—the association of 2 or more benign or malignant neoplasms—represents a well-known pitfall in making a correct clinical and pathologic diagnosis.² Many theories have been proposed to explain the pathophysiology of collision tumors. Some authors have speculated that they arise from involvement of related cell types.¹ Other theories include induction by cytokines and growth factors secreted from one tumor that provides an ideal environment for proliferation of other cell types, a field cancerization effect of sun-damaged skin, or a coincidence.²

In our case, it is possible that the 2 tumors arose from a nevus sebaceus. One retrospective study of 706 cases of nevus sebaceus (707 specimens) found that 22.5% of cases developed secondary proliferation; of those cases, 18.9% were benign.³ Additionally, in 4.2% of cases of nevus sebaceus, proliferation of 2 or more tumors developed. The most common malignant neoplasm to develop from nevus sebaceus was BCC, followed by squamous cell carcinoma and sebaceous carcinoma. The most common benign neoplasm to develop from nevus sebaceus was trichoblastoma, followed by syringocystadenoma papilliferum.³

Our case highlights the possibility of a sampling error when performing a biopsy of any large neoplasm. Additionally, Mohs surgeons should maintain high clinical suspicion for collision tumors when encountering a large tumor with pathology inconsistent with the original biopsy. Apocrine hidrocystoma should be considered in the differential diagnosis of a large cystic mass of the scalp. Also, it is important to recognize that malignant lesions, such as BCC, can coexist with another benign tumor. Basal cell carcinoma is rare in Black patients, supporting our belief that our patient’s tumors arose from a nevus sebaceus.

It also is important for Mohs surgeons to consider any potential discrepancy between the initial pathology report and Mohs intraoperative pathology that can impact diagnosis, the aggressiveness of the tumors identified, and how such aggressiveness may affect management options.^4,5 Some dermatology practices request biopsy slides from patients who are referred for Mohs micrographic surgery for internal review by a dermatopathologist before surgery is performed; however, this protocol requires additional time and adds costs for the overall health care system.⁴ One study found that internal review of outside biopsy slides resulted in a change in diagnosis in 2.2% of patients (N=3345)—affecting management in 61% of cases in which the diagnosis was changed.⁴ Another study (N=163) found that the reported aggressiveness of 50.5% of nonmelanoma cases in an initial biopsy report was changed during Mohs micrographic surgery.⁵ Mohs surgeons should be aware that discrepancies can occur, and if a discrepancy is discovered, the procedure may be paused until the initial biopsy slide is reviewed and further information is collected.

To the Editor:

A collision tumor is the coexistence of 2 discrete tumors in the same neoplasm, possibly comprising a malignant tumor and a benign tumor, and thereby complicating appropriate diagnosis and treatment. We present a case of a basal cell carcinoma (BCC) of the scalp that was later found to be in collision with an apocrine hidrocystoma that might have arisen from a nevus sebaceus. Although rare, BCC can coexist with apocrine hidrocystoma. Jayaprakasam and Rene¹ reported a case of a collision tumor containing BCC and hidrocystoma on the eyelid.¹ We present a case of a BCC on the scalp that was later found to be in collision with an apocrine hidrocystoma that possibly arose from a nevus sebaceus.

A 92-year-old Black woman with a biopsy-confirmed primary BCC of the left parietal scalp presented for Mohs micrographic surgery. The pathology report from an outside facility was reviewed. The initial diagnosis had been made with 2 punch biopsies from separate areas of the large nodule—one consistent with nodular and pigmented BCC (Figure 1), and the other revealed nodular ulcerated BCC. Physical examination prior to Mohs surgery revealed a mobile, flesh-colored, 6.2×6.0-cm nodule with minimal overlying hair on the left parietal scalp (Figure 2). During stage-I processing by the histopathology laboratory, large cystic structures were encountered; en face frozen sections showed a cystic tumor. Excised tissue was submitted for permanent processing to aid in diagnosis; the initial diagnostic biopsy slides were requested from the outside facility for review.

The initial diagnostic biopsy slides were reviewed and found to be consistent with nodular and pigmented BCC, as previously reported. Findings from hematoxylin and eosin staining of tissue obtained from Mohs sections were consistent with a combined neoplasm comprising BCC (Figure 3A) and apocrine hidrocystoma (Figure 3B). In addition, one section was characterized by acanthosis, papillomatosis, and sebaceous glands—similar to findings that are seen in a nevus sebaceus (Figure 3C).

The BCC was cleared after stage I; the final wound size was 7×6.6 cm. Although benign apocrine hidrocystoma was still evident at the margin, further excision was not performed at the request of the patient and her family. Partial primary wound closure was performed with pulley sutures. A xenograft was placed over the unclosed central portion. The wound was permitted to heal by second intention.

The clinical differential diagnosis of a scalp nodule includes a pilar cyst, BCC, squamous cell carcinoma, melanoma, cutaneous metastasis, adnexal tumor, atypical fibroxanthoma, and collision tumor. A collision tumor—the association of 2 or more benign or malignant neoplasms—represents a well-known pitfall in making a correct clinical and pathologic diagnosis.² Many theories have been proposed to explain the pathophysiology of collision tumors. Some authors have speculated that they arise from involvement of related cell types.¹ Other theories include induction by cytokines and growth factors secreted from one tumor that provides an ideal environment for proliferation of other cell types, a field cancerization effect of sun-damaged skin, or a coincidence.²

In our case, it is possible that the 2 tumors arose from a nevus sebaceus. One retrospective study of 706 cases of nevus sebaceus (707 specimens) found that 22.5% of cases developed secondary proliferation; of those cases, 18.9% were benign.³ Additionally, in 4.2% of cases of nevus sebaceus, proliferation of 2 or more tumors developed. The most common malignant neoplasm to develop from nevus sebaceus was BCC, followed by squamous cell carcinoma and sebaceous carcinoma. The most common benign neoplasm to develop from nevus sebaceus was trichoblastoma, followed by syringocystadenoma papilliferum.³

Our case highlights the possibility of a sampling error when performing a biopsy of any large neoplasm. Additionally, Mohs surgeons should maintain high clinical suspicion for collision tumors when encountering a large tumor with pathology inconsistent with the original biopsy. Apocrine hidrocystoma should be considered in the differential diagnosis of a large cystic mass of the scalp. Also, it is important to recognize that malignant lesions, such as BCC, can coexist with another benign tumor. Basal cell carcinoma is rare in Black patients, supporting our belief that our patient’s tumors arose from a nevus sebaceus.

It also is important for Mohs surgeons to consider any potential discrepancy between the initial pathology report and Mohs intraoperative pathology that can impact diagnosis, the aggressiveness of the tumors identified, and how such aggressiveness may affect management options.^4,5 Some dermatology practices request biopsy slides from patients who are referred for Mohs micrographic surgery for internal review by a dermatopathologist before surgery is performed; however, this protocol requires additional time and adds costs for the overall health care system.⁴ One study found that internal review of outside biopsy slides resulted in a change in diagnosis in 2.2% of patients (N=3345)—affecting management in 61% of cases in which the diagnosis was changed.⁴ Another study (N=163) found that the reported aggressiveness of 50.5% of nonmelanoma cases in an initial biopsy report was changed during Mohs micrographic surgery.⁵ Mohs surgeons should be aware that discrepancies can occur, and if a discrepancy is discovered, the procedure may be paused until the initial biopsy slide is reviewed and further information is collected.

To the Editor:

A collision tumor is the coexistence of 2 discrete tumors in the same neoplasm, possibly comprising a malignant tumor and a benign tumor, and thereby complicating appropriate diagnosis and treatment. We present a case of a basal cell carcinoma (BCC) of the scalp that was later found to be in collision with an apocrine hidrocystoma that might have arisen from a nevus sebaceus. Although rare, BCC can coexist with apocrine hidrocystoma. Jayaprakasam and Rene¹ reported a case of a collision tumor containing BCC and hidrocystoma on the eyelid.¹ We present a case of a BCC on the scalp that was later found to be in collision with an apocrine hidrocystoma that possibly arose from a nevus sebaceus.

A 92-year-old Black woman with a biopsy-confirmed primary BCC of the left parietal scalp presented for Mohs micrographic surgery. The pathology report from an outside facility was reviewed. The initial diagnosis had been made with 2 punch biopsies from separate areas of the large nodule—one consistent with nodular and pigmented BCC (Figure 1), and the other revealed nodular ulcerated BCC. Physical examination prior to Mohs surgery revealed a mobile, flesh-colored, 6.2×6.0-cm nodule with minimal overlying hair on the left parietal scalp (Figure 2). During stage-I processing by the histopathology laboratory, large cystic structures were encountered; en face frozen sections showed a cystic tumor. Excised tissue was submitted for permanent processing to aid in diagnosis; the initial diagnostic biopsy slides were requested from the outside facility for review.

The initial diagnostic biopsy slides were reviewed and found to be consistent with nodular and pigmented BCC, as previously reported. Findings from hematoxylin and eosin staining of tissue obtained from Mohs sections were consistent with a combined neoplasm comprising BCC (Figure 3A) and apocrine hidrocystoma (Figure 3B). In addition, one section was characterized by acanthosis, papillomatosis, and sebaceous glands—similar to findings that are seen in a nevus sebaceus (Figure 3C).

The BCC was cleared after stage I; the final wound size was 7×6.6 cm. Although benign apocrine hidrocystoma was still evident at the margin, further excision was not performed at the request of the patient and her family. Partial primary wound closure was performed with pulley sutures. A xenograft was placed over the unclosed central portion. The wound was permitted to heal by second intention.

The clinical differential diagnosis of a scalp nodule includes a pilar cyst, BCC, squamous cell carcinoma, melanoma, cutaneous metastasis, adnexal tumor, atypical fibroxanthoma, and collision tumor. A collision tumor—the association of 2 or more benign or malignant neoplasms—represents a well-known pitfall in making a correct clinical and pathologic diagnosis.² Many theories have been proposed to explain the pathophysiology of collision tumors. Some authors have speculated that they arise from involvement of related cell types.¹ Other theories include induction by cytokines and growth factors secreted from one tumor that provides an ideal environment for proliferation of other cell types, a field cancerization effect of sun-damaged skin, or a coincidence.²

In our case, it is possible that the 2 tumors arose from a nevus sebaceus. One retrospective study of 706 cases of nevus sebaceus (707 specimens) found that 22.5% of cases developed secondary proliferation; of those cases, 18.9% were benign.³ Additionally, in 4.2% of cases of nevus sebaceus, proliferation of 2 or more tumors developed. The most common malignant neoplasm to develop from nevus sebaceus was BCC, followed by squamous cell carcinoma and sebaceous carcinoma. The most common benign neoplasm to develop from nevus sebaceus was trichoblastoma, followed by syringocystadenoma papilliferum.³

Our case highlights the possibility of a sampling error when performing a biopsy of any large neoplasm. Additionally, Mohs surgeons should maintain high clinical suspicion for collision tumors when encountering a large tumor with pathology inconsistent with the original biopsy. Apocrine hidrocystoma should be considered in the differential diagnosis of a large cystic mass of the scalp. Also, it is important to recognize that malignant lesions, such as BCC, can coexist with another benign tumor. Basal cell carcinoma is rare in Black patients, supporting our belief that our patient’s tumors arose from a nevus sebaceus.

It also is important for Mohs surgeons to consider any potential discrepancy between the initial pathology report and Mohs intraoperative pathology that can impact diagnosis, the aggressiveness of the tumors identified, and how such aggressiveness may affect management options.^4,5 Some dermatology practices request biopsy slides from patients who are referred for Mohs micrographic surgery for internal review by a dermatopathologist before surgery is performed; however, this protocol requires additional time and adds costs for the overall health care system.⁴ One study found that internal review of outside biopsy slides resulted in a change in diagnosis in 2.2% of patients (N=3345)—affecting management in 61% of cases in which the diagnosis was changed.⁴ Another study (N=163) found that the reported aggressiveness of 50.5% of nonmelanoma cases in an initial biopsy report was changed during Mohs micrographic surgery.⁵ Mohs surgeons should be aware that discrepancies can occur, and if a discrepancy is discovered, the procedure may be paused until the initial biopsy slide is reviewed and further information is collected.

In an update to its 2016 recommendations for skin cancer screening, the U.S. Preventive Services Task Force (USPSTF) has once again determined that there is not enough evidence to recommend for or against screening with a visual skin exam in adolescents and adults without symptoms.

This final recommendation applies to the general public and is not meant for those at higher risk, such as people with a family history of skin cancer or who have any signs or symptoms, such as irregular moles.

“The new recommendations are consistent with those from 2016, and we are unable to balance benefits and harms,” said Task Force member Katrina Donahue, MD, MPH, professor and vice chair of research in the department of family medicine at the University of North Carolina, Chapel Hill. “Unfortunately, there is not enough evidence to recommend for or against screening, and health care professionals should use their judgment when deciding whether or not to screen.”

Dr. Donahue told this news organization that this is a call for more research: “Our recommendations are for patients who present to primary care without symptoms, and after a careful assessment of benefit and harms, we didn’t have evidence to push us towards screening as a benefit. We did look at data from two large screening programs, but they were from Europe and not representative of the U.S. population. They also did not show a benefit for reducing melanoma-related mortality.”

The USPSTF final recommendation statement and corresponding evidence summary have been published online in JAMA, as well as on the USPSTF website.

Skin cancer is the most commonly diagnosed cancer in the United States, but there are different types that vary in their incidence and severity. Basal and squamous cell carcinomas are the most common types of skin cancer, but they infrequently lead to death or substantial morbidity, notes the USPTSF. Melanomas represent about 1% of skin cancer and cause the most skin cancer deaths. An estimated 8,000 individuals in the United States will die of melanoma in 2023.

There are racial differences in melanoma incidence; it is about 30 times more common in White versus Black persons, but disease in persons with darker skin color tends to be diagnosed at a later stage. These disparities may be due to differences in risk factors, access to care, and clinical presentation.

In an accompanying editorial, Maryam M. Asgari, MD, MPH, of the department of dermatology, Massachusetts General Hospital, Boston, and Lori A. Crane, PhD, MPH, of the Colorado School of Public Health, University of Colorado, Aurora, point out that people with darker skin phenotypes also tend to be affected by skin cancers that are not associated with UV radiation, such as acral melanoma, which arises on the palms and soles, and skin cancers that arise in areas of chronic inflammation, such as wounds.

Review of evidence

The USPSTF commissioned a systematic review to evaluate the benefits and harms of screening for skin cancer in asymptomatic adolescents and adults, including evidence for both keratinocyte carcinoma (basal cell carcinoma and squamous cell carcinoma) and cutaneous melanoma.

Foundational evidence showed that the sensitivity of visual skin examination by a clinician to detect melanoma ranged from 40% to 70% and specificity ranged from 86% to 98%. Evidence that evaluated the diagnostic accuracy of visual skin examination to detect keratinocyte carcinoma was limited and inconsistent. There were no new studies reporting on diagnostic accuracy for an asymptomatic screening population.

The USPSTF also reviewed 20 studies in 29 articles (n = 6,053,411). This included three nonrandomized studies evaluating two skin cancer screening programs in Germany, but results were inconsistent. In addition, the ecological and nonrandomized design of the studies limited the conclusions that could be drawn and the applicability to a U.S. population was difficult to assess because of differences in population diversity and health care delivery in the United States.

Other nonrandomized studies that looked at various outcomes, such as harms and stage at diagnosis and melanoma or all-cause mortality, also did not provide sufficient evidence to support screening.
 

Research is needed

In a second accompanying editorial published in JAMA Dermatology, Adewole S. Adamson, MD, MPP, of the division of dermatology and dermatologic surgery at the University of Texas, Austin, pointed out that unlike other cancer screening programs, such as those for breast, colon, and prostate cancer, skin cancer screening programs are somewhat less organized.

The other programs focus on defined groups of the population, generally with easily identifiable characteristics such as age, sex, and family history, and importantly, there are always defined ages for initiation and halting of screening and intervals for screening frequency. None of these basic screening parameters have been widely adopted among dermatologists in the United States, he wrote. “One important reason why skin cancer screening has remained inconsistent is that it is not covered by Medicare or by many commercial insurance companies,” Dr. Adamson told this news organization. “The test, in this case the skin exam, is often performed as part of a routine dermatology visit.”

Dermatologists should take the lead on this, he said. “Dermatologists should push for a high quality prospective clinical trial of skin cancer screening, preferably in a high-risk population.”

Dr. Donahue agrees that research is needed, as noted in the recommendation. For example, studies are needed demonstrating consistent data of the effects of screening on morbidity and mortality or early detection of skin cancer, and clearer descriptions of skin color and inclusion of a full spectrum of skin colors in study participants. Clinical research is also needed on outcomes in participants that reflect the diversity of the U.S. population.

“I hope funding agencies will be interested in this area of study,” she said. “We put out the whole systematic review and point out the gaps. We need consistent evidence in detecting cancer early and reducing complications from skin cancer.”

The U.S. Congress mandates that the Agency for Healthcare Research and Quality support the operations of the USPSTF.

None of the USPSTF authors report any disclosures. Dr. Asgari reported receiving royalties from UpToDate. Dr. Crane did not make any disclosures. Dr. Adamson reported serving as an expert reviewer for the U.S. Preventive Services Task Force skin cancer screening report, as well as support from the Robert Wood Johnson Foundation, the Dermatology Foundation Public Health Career Development Award, the National Institutes of Health, the American Cancer Society, and Meredith’s Mission for Melanoma.

A version of this article originally appeared on Medscape.com.

In an update to its 2016 recommendations for skin cancer screening, the U.S. Preventive Services Task Force (USPSTF) has once again determined that there is not enough evidence to recommend for or against screening with a visual skin exam in adolescents and adults without symptoms.

This final recommendation applies to the general public and is not meant for those at higher risk, such as people with a family history of skin cancer or who have any signs or symptoms, such as irregular moles.

“The new recommendations are consistent with those from 2016, and we are unable to balance benefits and harms,” said Task Force member Katrina Donahue, MD, MPH, professor and vice chair of research in the department of family medicine at the University of North Carolina, Chapel Hill. “Unfortunately, there is not enough evidence to recommend for or against screening, and health care professionals should use their judgment when deciding whether or not to screen.”

Dr. Donahue told this news organization that this is a call for more research: “Our recommendations are for patients who present to primary care without symptoms, and after a careful assessment of benefit and harms, we didn’t have evidence to push us towards screening as a benefit. We did look at data from two large screening programs, but they were from Europe and not representative of the U.S. population. They also did not show a benefit for reducing melanoma-related mortality.”

The USPSTF final recommendation statement and corresponding evidence summary have been published online in JAMA, as well as on the USPSTF website.

Skin cancer is the most commonly diagnosed cancer in the United States, but there are different types that vary in their incidence and severity. Basal and squamous cell carcinomas are the most common types of skin cancer, but they infrequently lead to death or substantial morbidity, notes the USPTSF. Melanomas represent about 1% of skin cancer and cause the most skin cancer deaths. An estimated 8,000 individuals in the United States will die of melanoma in 2023.

There are racial differences in melanoma incidence; it is about 30 times more common in White versus Black persons, but disease in persons with darker skin color tends to be diagnosed at a later stage. These disparities may be due to differences in risk factors, access to care, and clinical presentation.

In an accompanying editorial, Maryam M. Asgari, MD, MPH, of the department of dermatology, Massachusetts General Hospital, Boston, and Lori A. Crane, PhD, MPH, of the Colorado School of Public Health, University of Colorado, Aurora, point out that people with darker skin phenotypes also tend to be affected by skin cancers that are not associated with UV radiation, such as acral melanoma, which arises on the palms and soles, and skin cancers that arise in areas of chronic inflammation, such as wounds.

Review of evidence

The USPSTF commissioned a systematic review to evaluate the benefits and harms of screening for skin cancer in asymptomatic adolescents and adults, including evidence for both keratinocyte carcinoma (basal cell carcinoma and squamous cell carcinoma) and cutaneous melanoma.

Foundational evidence showed that the sensitivity of visual skin examination by a clinician to detect melanoma ranged from 40% to 70% and specificity ranged from 86% to 98%. Evidence that evaluated the diagnostic accuracy of visual skin examination to detect keratinocyte carcinoma was limited and inconsistent. There were no new studies reporting on diagnostic accuracy for an asymptomatic screening population.

The USPSTF also reviewed 20 studies in 29 articles (n = 6,053,411). This included three nonrandomized studies evaluating two skin cancer screening programs in Germany, but results were inconsistent. In addition, the ecological and nonrandomized design of the studies limited the conclusions that could be drawn and the applicability to a U.S. population was difficult to assess because of differences in population diversity and health care delivery in the United States.

Other nonrandomized studies that looked at various outcomes, such as harms and stage at diagnosis and melanoma or all-cause mortality, also did not provide sufficient evidence to support screening.
 

Research is needed

In a second accompanying editorial published in JAMA Dermatology, Adewole S. Adamson, MD, MPP, of the division of dermatology and dermatologic surgery at the University of Texas, Austin, pointed out that unlike other cancer screening programs, such as those for breast, colon, and prostate cancer, skin cancer screening programs are somewhat less organized.

The other programs focus on defined groups of the population, generally with easily identifiable characteristics such as age, sex, and family history, and importantly, there are always defined ages for initiation and halting of screening and intervals for screening frequency. None of these basic screening parameters have been widely adopted among dermatologists in the United States, he wrote. “One important reason why skin cancer screening has remained inconsistent is that it is not covered by Medicare or by many commercial insurance companies,” Dr. Adamson told this news organization. “The test, in this case the skin exam, is often performed as part of a routine dermatology visit.”

Dermatologists should take the lead on this, he said. “Dermatologists should push for a high quality prospective clinical trial of skin cancer screening, preferably in a high-risk population.”

Dr. Donahue agrees that research is needed, as noted in the recommendation. For example, studies are needed demonstrating consistent data of the effects of screening on morbidity and mortality or early detection of skin cancer, and clearer descriptions of skin color and inclusion of a full spectrum of skin colors in study participants. Clinical research is also needed on outcomes in participants that reflect the diversity of the U.S. population.

“I hope funding agencies will be interested in this area of study,” she said. “We put out the whole systematic review and point out the gaps. We need consistent evidence in detecting cancer early and reducing complications from skin cancer.”

The U.S. Congress mandates that the Agency for Healthcare Research and Quality support the operations of the USPSTF.

None of the USPSTF authors report any disclosures. Dr. Asgari reported receiving royalties from UpToDate. Dr. Crane did not make any disclosures. Dr. Adamson reported serving as an expert reviewer for the U.S. Preventive Services Task Force skin cancer screening report, as well as support from the Robert Wood Johnson Foundation, the Dermatology Foundation Public Health Career Development Award, the National Institutes of Health, the American Cancer Society, and Meredith’s Mission for Melanoma.

A version of this article originally appeared on Medscape.com.

In an update to its 2016 recommendations for skin cancer screening, the U.S. Preventive Services Task Force (USPSTF) has once again determined that there is not enough evidence to recommend for or against screening with a visual skin exam in adolescents and adults without symptoms.

This final recommendation applies to the general public and is not meant for those at higher risk, such as people with a family history of skin cancer or who have any signs or symptoms, such as irregular moles.

“The new recommendations are consistent with those from 2016, and we are unable to balance benefits and harms,” said Task Force member Katrina Donahue, MD, MPH, professor and vice chair of research in the department of family medicine at the University of North Carolina, Chapel Hill. “Unfortunately, there is not enough evidence to recommend for or against screening, and health care professionals should use their judgment when deciding whether or not to screen.”

Dr. Donahue told this news organization that this is a call for more research: “Our recommendations are for patients who present to primary care without symptoms, and after a careful assessment of benefit and harms, we didn’t have evidence to push us towards screening as a benefit. We did look at data from two large screening programs, but they were from Europe and not representative of the U.S. population. They also did not show a benefit for reducing melanoma-related mortality.”

The USPSTF final recommendation statement and corresponding evidence summary have been published online in JAMA, as well as on the USPSTF website.

Skin cancer is the most commonly diagnosed cancer in the United States, but there are different types that vary in their incidence and severity. Basal and squamous cell carcinomas are the most common types of skin cancer, but they infrequently lead to death or substantial morbidity, notes the USPTSF. Melanomas represent about 1% of skin cancer and cause the most skin cancer deaths. An estimated 8,000 individuals in the United States will die of melanoma in 2023.

There are racial differences in melanoma incidence; it is about 30 times more common in White versus Black persons, but disease in persons with darker skin color tends to be diagnosed at a later stage. These disparities may be due to differences in risk factors, access to care, and clinical presentation.

In an accompanying editorial, Maryam M. Asgari, MD, MPH, of the department of dermatology, Massachusetts General Hospital, Boston, and Lori A. Crane, PhD, MPH, of the Colorado School of Public Health, University of Colorado, Aurora, point out that people with darker skin phenotypes also tend to be affected by skin cancers that are not associated with UV radiation, such as acral melanoma, which arises on the palms and soles, and skin cancers that arise in areas of chronic inflammation, such as wounds.

Review of evidence

The USPSTF commissioned a systematic review to evaluate the benefits and harms of screening for skin cancer in asymptomatic adolescents and adults, including evidence for both keratinocyte carcinoma (basal cell carcinoma and squamous cell carcinoma) and cutaneous melanoma.

Foundational evidence showed that the sensitivity of visual skin examination by a clinician to detect melanoma ranged from 40% to 70% and specificity ranged from 86% to 98%. Evidence that evaluated the diagnostic accuracy of visual skin examination to detect keratinocyte carcinoma was limited and inconsistent. There were no new studies reporting on diagnostic accuracy for an asymptomatic screening population.

The USPSTF also reviewed 20 studies in 29 articles (n = 6,053,411). This included three nonrandomized studies evaluating two skin cancer screening programs in Germany, but results were inconsistent. In addition, the ecological and nonrandomized design of the studies limited the conclusions that could be drawn and the applicability to a U.S. population was difficult to assess because of differences in population diversity and health care delivery in the United States.

Other nonrandomized studies that looked at various outcomes, such as harms and stage at diagnosis and melanoma or all-cause mortality, also did not provide sufficient evidence to support screening.
 

Research is needed

In a second accompanying editorial published in JAMA Dermatology, Adewole S. Adamson, MD, MPP, of the division of dermatology and dermatologic surgery at the University of Texas, Austin, pointed out that unlike other cancer screening programs, such as those for breast, colon, and prostate cancer, skin cancer screening programs are somewhat less organized.

The other programs focus on defined groups of the population, generally with easily identifiable characteristics such as age, sex, and family history, and importantly, there are always defined ages for initiation and halting of screening and intervals for screening frequency. None of these basic screening parameters have been widely adopted among dermatologists in the United States, he wrote. “One important reason why skin cancer screening has remained inconsistent is that it is not covered by Medicare or by many commercial insurance companies,” Dr. Adamson told this news organization. “The test, in this case the skin exam, is often performed as part of a routine dermatology visit.”

Dermatologists should take the lead on this, he said. “Dermatologists should push for a high quality prospective clinical trial of skin cancer screening, preferably in a high-risk population.”

Dr. Donahue agrees that research is needed, as noted in the recommendation. For example, studies are needed demonstrating consistent data of the effects of screening on morbidity and mortality or early detection of skin cancer, and clearer descriptions of skin color and inclusion of a full spectrum of skin colors in study participants. Clinical research is also needed on outcomes in participants that reflect the diversity of the U.S. population.

“I hope funding agencies will be interested in this area of study,” she said. “We put out the whole systematic review and point out the gaps. We need consistent evidence in detecting cancer early and reducing complications from skin cancer.”

The U.S. Congress mandates that the Agency for Healthcare Research and Quality support the operations of the USPSTF.

None of the USPSTF authors report any disclosures. Dr. Asgari reported receiving royalties from UpToDate. Dr. Crane did not make any disclosures. Dr. Adamson reported serving as an expert reviewer for the U.S. Preventive Services Task Force skin cancer screening report, as well as support from the Robert Wood Johnson Foundation, the Dermatology Foundation Public Health Career Development Award, the National Institutes of Health, the American Cancer Society, and Meredith’s Mission for Melanoma.

A version of this article originally appeared on Medscape.com.

Citrus bergamia (bergamot) is a fruit tree thought to originate in the Mediterranean area; its fruit has been a part of the diet in that region since the early 18th century.¹ Bergamot is known to confer antioxidant as well as anti-inflammatory activity, and yields proapoptotic effects in the sebaceous gland.^2,3 The plant contains the natural furocoumarin bergapten, which is also known as 5-methoxypsoralen.⁴

Antibacterial, anti-inflammatory, hypolipemic, and anticancer properties have been associated with bergapten, which is primarily found in bergamot essential oil and used effectively as a photosensitizing agent.⁵ In this capacity, bergamot oil has been used for photodynamic therapy of cutaneous conditions such as vitiligo.⁶ In fact, for several years 5-methoxypsoralen and 8-methoxypsoralen have been used to achieve acceptable clearance rates of psoriasis and vitiligo.⁷ This column focuses on bergapten, as well as the cutaneous conditions for which bergamot has been shown to have some benefits warranting application or further investigation.
 

Bergapten

In a 2021 literature review, Liang et al. cited the anti-inflammatory, antimicrobial, anticancer, and other salutary effects associated with bergapten. Based on numerous citations, they also cautioned about the phototoxicity of the compound combined with ultraviolet (UV) light while noting the photoactivation of bergapten for anticancer uses.⁴

The following year, Quetglas-Llabrés et al. acknowledged, in another literature review, the numerous preclinical and in vitro studies demonstrating the therapeutic activity of bergapten and highlighted clinical trials revealing notable lesion clearance rates of psoriasis or vitiligo imparted by oral or topical bergapten along with UV irradiation. Bergapten was also found to be effective as hypolipemic therapy.⁵

Anti-inflammatory topical uses

In a 2017 study by Han et al. of 10 essential oils, bergamot was among the investigated oils, all of which exhibited significant anti-proliferative activity in a preinflamed human dermal fibroblast system simulating chronic inflammation. Bergamot was among three essential oils that also suppressed protein molecules involved with inflammation, immune responses, and tissue remodeling, indicating anti-inflammatory and wound healing characteristics.⁸

More recently, Cristiano et al. reported that ultradeformable nanocarriers containing bergamot essential oil and ammonium glycyrrhizinate were demonstrated in healthy human volunteers to be characterized by the appropriate mean size, size distribution, surface charge, and long-term stability for topical administration. Topical administration on human volunteers also revealed greater activity of the combined agents as compared with a nanosystem loaded only with ammonium glycyrrhizinate. The researchers concluded that this combination of ingredients in ultradeformable vesicles shows potential as topical anti-inflammatory treatment.³

Acne

In a 2020 study using golden hamsters, Sun et al. assessed the effects of the juice and essential oils of bergamot and sweet orange on acne vulgaris engendered by excessive androgen secretion. Among 80 male hamsters randomly divided into 10 groups ranging from low to high doses, all results demonstrated improvement with treatment as seen by decreased growth rates of sebaceous glands, suppressed triglyceride accumulation, lowered inflammatory cytokine release, and apoptosis promotion in sebaceous glands. The authors noted that the essential oils yielded better dose-dependent effects than the juices.²

Psoriasis

In 2019, Perna et al. conducted a literature review on the effects of bergamot essential oil, extract, juice, and polyphenolic fraction on various health metrics. Thirty-one studies (20 involving humans with 1,709 subjects and 11 in rats and mice) were identified. Animal models indicated that bergamot essential oil (10 mg/kg or 20 mg/kg daily for 20 weeks) reduced psoriatic plaques, increased skin collagen content, and fostered hair growth and that bergamot juice (20 mg/kg) diminished proinflammatory cytokines. Human studies showed that bergamot extract and essential oil may reduce blood pressure and improve mental conditions.⁹

Vitiligo

In 2019, Shaaban et al. prepared elastic nanocarriers (spanlastics) to deliver psoralen-containing bergamot oil along with PUVB with the intention of harnessing melanogenic activity to treat vitiligo. Histopathologic assessment on rat skin was conducted before clinical treatment in patients with vitiligo. The spanlastics were deemed to be of suitable nanosize and deformable, yielding consistent bergamot oil release. The bergamot oil included in the nanocarrier was found to enhance photostability and photodynamic activity, with the researchers concluding that bergamot oil nanospanlastics with psoralen-UVB therapy shows potential as a vitiligo therapy.¹⁰

Two years later, Shaaban evaluated bergamot oil formulated in nanostructured lipid carriers as a photosensitizer for photodynamic treatment of vitiligo. The botanical oil was effectively used in the nanostructured lipid carriers with a gel consistency that delivered sustained release of the oil for 24 hours. Preclinical and clinical results in patients were encouraging for the topical photodynamic treatment of vitiligo, with the nanostructured lipid carriers improving the photostability and photodynamic activity of bergamot oil.⁶

Photoaging, photoprotection, and safety concerns

Three decades ago, an international cooperative study of the photophysical, photomutagenic, and photocarcinogenic characteristics of bergamot oil and the effect of UVA and UVB sunscreens found that UVB and UVA sunscreens at low concentration (0.5%-1%) in perfumes could not inhibit the phototoxicity of bergamot oil on human skin.¹¹

In a 2015 study assessing the impact of 38% bergamot polyphenolic fraction (a highly concentrated Citrus bergamia fruit extract) on UVB-generated photoaging, Nisticò et al. found that the bergamot compound dose-dependently protected HaCaT cells against UVB-caused oxidative stress and photoaging markers. Suggesting that the high-antioxidant bergamot polyphenolic fraction has potential for use in skin care formulations, the researchers added that the extract seems to induce antiproliferative, immune-modulating, and antiaging activity.¹²In 2022, Alexa et al. performed in vitro tests and found that natural preparations containing bergamot, orange, and clove essential oils do not significantly alter physiological skin parameters and were deemed safe for topical use. An emulsion with bergamot essential oil was also found to reduce the viability of oral squamous cell carcinoma cells.¹³

Conclusion

As a photosensitizing agent, bergamot has an established role in skin care. Beyond its niche role in treatments for vitiligo and psoriasis, this botanical product appears to show potential as an anti-inflammatory agent as well as an ingredient to combat photoaging and skin cancer. Much more research is needed to elucidate the possible wider benefits of this Mediterranean staple.

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur in Miami. She founded the division of cosmetic dermatology at the University of Miami in 1997. The third edition of her bestselling textbook, “Cosmetic Dermatology,” was published in 2022. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Johnson & Johnson, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a SaaS company used to generate skin care routines in office and as an ecommerce solution. Write to her at [email protected].

References

1. Juber M. Health benefits of bergamot. WebMD. November 29, 2022. Accessed March 21, 2023.

2. Sun P et al. Mediators Inflamm. 2020 Oct 6;2020:8868107.

3. Cristiano MC et al. Biomedicines. 2022 Apr 30;10(5):1039.

4. Liang Y et al. Phytother Res. 2021 Nov;35(11):6131-47.

5. Quetglas-Llabrés MM et al. Oxid Med Cell Longev. 2022 Apr 25;2022:8615242.

6. Shaaban M et al. Expert Opin Drug Deliv. 2021 Jan;18(1):139-50.

7. McNeely W, Goa KL. Drugs. 1998 Oct;56(4):667-90.

8. Han X, Beaumont C, Stevens N. Biochim Open. 2017 Apr 26;5:1-7.

9. Perna S et al. Food Sci Nutr. 2019 Jan 25;7(2):369-84.

10. Shaaban M et al. Drug Deliv Transl Res. 2019 Dec;9(6):1106-16.

11. Dubertret L et al. J Photochem Photobiol B. 1990 Nov;7(2-4):251-9.

12. Nisticò S et al. J Biol Regul Homeost Agents. 2015 Jul-Sep;29(3):723-8.

13. Alexa VT et al. Molecules. 2022 Feb 1;27(3):990.

Citrus bergamia (bergamot) is a fruit tree thought to originate in the Mediterranean area; its fruit has been a part of the diet in that region since the early 18th century.¹ Bergamot is known to confer antioxidant as well as anti-inflammatory activity, and yields proapoptotic effects in the sebaceous gland.^2,3 The plant contains the natural furocoumarin bergapten, which is also known as 5-methoxypsoralen.⁴

Antibacterial, anti-inflammatory, hypolipemic, and anticancer properties have been associated with bergapten, which is primarily found in bergamot essential oil and used effectively as a photosensitizing agent.⁵ In this capacity, bergamot oil has been used for photodynamic therapy of cutaneous conditions such as vitiligo.⁶ In fact, for several years 5-methoxypsoralen and 8-methoxypsoralen have been used to achieve acceptable clearance rates of psoriasis and vitiligo.⁷ This column focuses on bergapten, as well as the cutaneous conditions for which bergamot has been shown to have some benefits warranting application or further investigation.
 

Bergapten

In a 2021 literature review, Liang et al. cited the anti-inflammatory, antimicrobial, anticancer, and other salutary effects associated with bergapten. Based on numerous citations, they also cautioned about the phototoxicity of the compound combined with ultraviolet (UV) light while noting the photoactivation of bergapten for anticancer uses.⁴

The following year, Quetglas-Llabrés et al. acknowledged, in another literature review, the numerous preclinical and in vitro studies demonstrating the therapeutic activity of bergapten and highlighted clinical trials revealing notable lesion clearance rates of psoriasis or vitiligo imparted by oral or topical bergapten along with UV irradiation. Bergapten was also found to be effective as hypolipemic therapy.⁵

Anti-inflammatory topical uses

In a 2017 study by Han et al. of 10 essential oils, bergamot was among the investigated oils, all of which exhibited significant anti-proliferative activity in a preinflamed human dermal fibroblast system simulating chronic inflammation. Bergamot was among three essential oils that also suppressed protein molecules involved with inflammation, immune responses, and tissue remodeling, indicating anti-inflammatory and wound healing characteristics.⁸

More recently, Cristiano et al. reported that ultradeformable nanocarriers containing bergamot essential oil and ammonium glycyrrhizinate were demonstrated in healthy human volunteers to be characterized by the appropriate mean size, size distribution, surface charge, and long-term stability for topical administration. Topical administration on human volunteers also revealed greater activity of the combined agents as compared with a nanosystem loaded only with ammonium glycyrrhizinate. The researchers concluded that this combination of ingredients in ultradeformable vesicles shows potential as topical anti-inflammatory treatment.³

Acne

In a 2020 study using golden hamsters, Sun et al. assessed the effects of the juice and essential oils of bergamot and sweet orange on acne vulgaris engendered by excessive androgen secretion. Among 80 male hamsters randomly divided into 10 groups ranging from low to high doses, all results demonstrated improvement with treatment as seen by decreased growth rates of sebaceous glands, suppressed triglyceride accumulation, lowered inflammatory cytokine release, and apoptosis promotion in sebaceous glands. The authors noted that the essential oils yielded better dose-dependent effects than the juices.²

Psoriasis

In 2019, Perna et al. conducted a literature review on the effects of bergamot essential oil, extract, juice, and polyphenolic fraction on various health metrics. Thirty-one studies (20 involving humans with 1,709 subjects and 11 in rats and mice) were identified. Animal models indicated that bergamot essential oil (10 mg/kg or 20 mg/kg daily for 20 weeks) reduced psoriatic plaques, increased skin collagen content, and fostered hair growth and that bergamot juice (20 mg/kg) diminished proinflammatory cytokines. Human studies showed that bergamot extract and essential oil may reduce blood pressure and improve mental conditions.⁹

Vitiligo

In 2019, Shaaban et al. prepared elastic nanocarriers (spanlastics) to deliver psoralen-containing bergamot oil along with PUVB with the intention of harnessing melanogenic activity to treat vitiligo. Histopathologic assessment on rat skin was conducted before clinical treatment in patients with vitiligo. The spanlastics were deemed to be of suitable nanosize and deformable, yielding consistent bergamot oil release. The bergamot oil included in the nanocarrier was found to enhance photostability and photodynamic activity, with the researchers concluding that bergamot oil nanospanlastics with psoralen-UVB therapy shows potential as a vitiligo therapy.¹⁰

Two years later, Shaaban evaluated bergamot oil formulated in nanostructured lipid carriers as a photosensitizer for photodynamic treatment of vitiligo. The botanical oil was effectively used in the nanostructured lipid carriers with a gel consistency that delivered sustained release of the oil for 24 hours. Preclinical and clinical results in patients were encouraging for the topical photodynamic treatment of vitiligo, with the nanostructured lipid carriers improving the photostability and photodynamic activity of bergamot oil.⁶

Photoaging, photoprotection, and safety concerns

Three decades ago, an international cooperative study of the photophysical, photomutagenic, and photocarcinogenic characteristics of bergamot oil and the effect of UVA and UVB sunscreens found that UVB and UVA sunscreens at low concentration (0.5%-1%) in perfumes could not inhibit the phototoxicity of bergamot oil on human skin.¹¹

In a 2015 study assessing the impact of 38% bergamot polyphenolic fraction (a highly concentrated Citrus bergamia fruit extract) on UVB-generated photoaging, Nisticò et al. found that the bergamot compound dose-dependently protected HaCaT cells against UVB-caused oxidative stress and photoaging markers. Suggesting that the high-antioxidant bergamot polyphenolic fraction has potential for use in skin care formulations, the researchers added that the extract seems to induce antiproliferative, immune-modulating, and antiaging activity.¹²In 2022, Alexa et al. performed in vitro tests and found that natural preparations containing bergamot, orange, and clove essential oils do not significantly alter physiological skin parameters and were deemed safe for topical use. An emulsion with bergamot essential oil was also found to reduce the viability of oral squamous cell carcinoma cells.¹³

Conclusion

As a photosensitizing agent, bergamot has an established role in skin care. Beyond its niche role in treatments for vitiligo and psoriasis, this botanical product appears to show potential as an anti-inflammatory agent as well as an ingredient to combat photoaging and skin cancer. Much more research is needed to elucidate the possible wider benefits of this Mediterranean staple.

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur in Miami. She founded the division of cosmetic dermatology at the University of Miami in 1997. The third edition of her bestselling textbook, “Cosmetic Dermatology,” was published in 2022. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Johnson & Johnson, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a SaaS company used to generate skin care routines in office and as an ecommerce solution. Write to her at [email protected].

References

1. Juber M. Health benefits of bergamot. WebMD. November 29, 2022. Accessed March 21, 2023.

2. Sun P et al. Mediators Inflamm. 2020 Oct 6;2020:8868107.

3. Cristiano MC et al. Biomedicines. 2022 Apr 30;10(5):1039.

4. Liang Y et al. Phytother Res. 2021 Nov;35(11):6131-47.

5. Quetglas-Llabrés MM et al. Oxid Med Cell Longev. 2022 Apr 25;2022:8615242.

6. Shaaban M et al. Expert Opin Drug Deliv. 2021 Jan;18(1):139-50.

7. McNeely W, Goa KL. Drugs. 1998 Oct;56(4):667-90.

8. Han X, Beaumont C, Stevens N. Biochim Open. 2017 Apr 26;5:1-7.

9. Perna S et al. Food Sci Nutr. 2019 Jan 25;7(2):369-84.

10. Shaaban M et al. Drug Deliv Transl Res. 2019 Dec;9(6):1106-16.

11. Dubertret L et al. J Photochem Photobiol B. 1990 Nov;7(2-4):251-9.

12. Nisticò S et al. J Biol Regul Homeost Agents. 2015 Jul-Sep;29(3):723-8.

13. Alexa VT et al. Molecules. 2022 Feb 1;27(3):990.

Citrus bergamia (bergamot) is a fruit tree thought to originate in the Mediterranean area; its fruit has been a part of the diet in that region since the early 18th century.¹ Bergamot is known to confer antioxidant as well as anti-inflammatory activity, and yields proapoptotic effects in the sebaceous gland.^2,3 The plant contains the natural furocoumarin bergapten, which is also known as 5-methoxypsoralen.⁴

Antibacterial, anti-inflammatory, hypolipemic, and anticancer properties have been associated with bergapten, which is primarily found in bergamot essential oil and used effectively as a photosensitizing agent.⁵ In this capacity, bergamot oil has been used for photodynamic therapy of cutaneous conditions such as vitiligo.⁶ In fact, for several years 5-methoxypsoralen and 8-methoxypsoralen have been used to achieve acceptable clearance rates of psoriasis and vitiligo.⁷ This column focuses on bergapten, as well as the cutaneous conditions for which bergamot has been shown to have some benefits warranting application or further investigation.
 

Bergapten

In a 2021 literature review, Liang et al. cited the anti-inflammatory, antimicrobial, anticancer, and other salutary effects associated with bergapten. Based on numerous citations, they also cautioned about the phototoxicity of the compound combined with ultraviolet (UV) light while noting the photoactivation of bergapten for anticancer uses.⁴

The following year, Quetglas-Llabrés et al. acknowledged, in another literature review, the numerous preclinical and in vitro studies demonstrating the therapeutic activity of bergapten and highlighted clinical trials revealing notable lesion clearance rates of psoriasis or vitiligo imparted by oral or topical bergapten along with UV irradiation. Bergapten was also found to be effective as hypolipemic therapy.⁵

Anti-inflammatory topical uses

In a 2017 study by Han et al. of 10 essential oils, bergamot was among the investigated oils, all of which exhibited significant anti-proliferative activity in a preinflamed human dermal fibroblast system simulating chronic inflammation. Bergamot was among three essential oils that also suppressed protein molecules involved with inflammation, immune responses, and tissue remodeling, indicating anti-inflammatory and wound healing characteristics.⁸

More recently, Cristiano et al. reported that ultradeformable nanocarriers containing bergamot essential oil and ammonium glycyrrhizinate were demonstrated in healthy human volunteers to be characterized by the appropriate mean size, size distribution, surface charge, and long-term stability for topical administration. Topical administration on human volunteers also revealed greater activity of the combined agents as compared with a nanosystem loaded only with ammonium glycyrrhizinate. The researchers concluded that this combination of ingredients in ultradeformable vesicles shows potential as topical anti-inflammatory treatment.³

Acne

In a 2020 study using golden hamsters, Sun et al. assessed the effects of the juice and essential oils of bergamot and sweet orange on acne vulgaris engendered by excessive androgen secretion. Among 80 male hamsters randomly divided into 10 groups ranging from low to high doses, all results demonstrated improvement with treatment as seen by decreased growth rates of sebaceous glands, suppressed triglyceride accumulation, lowered inflammatory cytokine release, and apoptosis promotion in sebaceous glands. The authors noted that the essential oils yielded better dose-dependent effects than the juices.²

Psoriasis

In 2019, Perna et al. conducted a literature review on the effects of bergamot essential oil, extract, juice, and polyphenolic fraction on various health metrics. Thirty-one studies (20 involving humans with 1,709 subjects and 11 in rats and mice) were identified. Animal models indicated that bergamot essential oil (10 mg/kg or 20 mg/kg daily for 20 weeks) reduced psoriatic plaques, increased skin collagen content, and fostered hair growth and that bergamot juice (20 mg/kg) diminished proinflammatory cytokines. Human studies showed that bergamot extract and essential oil may reduce blood pressure and improve mental conditions.⁹

Vitiligo

In 2019, Shaaban et al. prepared elastic nanocarriers (spanlastics) to deliver psoralen-containing bergamot oil along with PUVB with the intention of harnessing melanogenic activity to treat vitiligo. Histopathologic assessment on rat skin was conducted before clinical treatment in patients with vitiligo. The spanlastics were deemed to be of suitable nanosize and deformable, yielding consistent bergamot oil release. The bergamot oil included in the nanocarrier was found to enhance photostability and photodynamic activity, with the researchers concluding that bergamot oil nanospanlastics with psoralen-UVB therapy shows potential as a vitiligo therapy.¹⁰

Two years later, Shaaban evaluated bergamot oil formulated in nanostructured lipid carriers as a photosensitizer for photodynamic treatment of vitiligo. The botanical oil was effectively used in the nanostructured lipid carriers with a gel consistency that delivered sustained release of the oil for 24 hours. Preclinical and clinical results in patients were encouraging for the topical photodynamic treatment of vitiligo, with the nanostructured lipid carriers improving the photostability and photodynamic activity of bergamot oil.⁶

Photoaging, photoprotection, and safety concerns

Three decades ago, an international cooperative study of the photophysical, photomutagenic, and photocarcinogenic characteristics of bergamot oil and the effect of UVA and UVB sunscreens found that UVB and UVA sunscreens at low concentration (0.5%-1%) in perfumes could not inhibit the phototoxicity of bergamot oil on human skin.¹¹

In a 2015 study assessing the impact of 38% bergamot polyphenolic fraction (a highly concentrated Citrus bergamia fruit extract) on UVB-generated photoaging, Nisticò et al. found that the bergamot compound dose-dependently protected HaCaT cells against UVB-caused oxidative stress and photoaging markers. Suggesting that the high-antioxidant bergamot polyphenolic fraction has potential for use in skin care formulations, the researchers added that the extract seems to induce antiproliferative, immune-modulating, and antiaging activity.¹²In 2022, Alexa et al. performed in vitro tests and found that natural preparations containing bergamot, orange, and clove essential oils do not significantly alter physiological skin parameters and were deemed safe for topical use. An emulsion with bergamot essential oil was also found to reduce the viability of oral squamous cell carcinoma cells.¹³

Conclusion

As a photosensitizing agent, bergamot has an established role in skin care. Beyond its niche role in treatments for vitiligo and psoriasis, this botanical product appears to show potential as an anti-inflammatory agent as well as an ingredient to combat photoaging and skin cancer. Much more research is needed to elucidate the possible wider benefits of this Mediterranean staple.

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur in Miami. She founded the division of cosmetic dermatology at the University of Miami in 1997. The third edition of her bestselling textbook, “Cosmetic Dermatology,” was published in 2022. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Johnson & Johnson, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a SaaS company used to generate skin care routines in office and as an ecommerce solution. Write to her at [email protected].

References

1. Juber M. Health benefits of bergamot. WebMD. November 29, 2022. Accessed March 21, 2023.

2. Sun P et al. Mediators Inflamm. 2020 Oct 6;2020:8868107.

3. Cristiano MC et al. Biomedicines. 2022 Apr 30;10(5):1039.

4. Liang Y et al. Phytother Res. 2021 Nov;35(11):6131-47.

5. Quetglas-Llabrés MM et al. Oxid Med Cell Longev. 2022 Apr 25;2022:8615242.

6. Shaaban M et al. Expert Opin Drug Deliv. 2021 Jan;18(1):139-50.

7. McNeely W, Goa KL. Drugs. 1998 Oct;56(4):667-90.

8. Han X, Beaumont C, Stevens N. Biochim Open. 2017 Apr 26;5:1-7.

9. Perna S et al. Food Sci Nutr. 2019 Jan 25;7(2):369-84.

10. Shaaban M et al. Drug Deliv Transl Res. 2019 Dec;9(6):1106-16.

11. Dubertret L et al. J Photochem Photobiol B. 1990 Nov;7(2-4):251-9.

12. Nisticò S et al. J Biol Regul Homeost Agents. 2015 Jul-Sep;29(3):723-8.

13. Alexa VT et al. Molecules. 2022 Feb 1;27(3):990.

PHOENIX – During the incidental treatment of melanocytic nevi during laser hair removal, common clinical changes include regression and decreased size, while common histologic changes include mild atypia and thermal damage, according to results from a systematic review of literature on the topic. To date, no severe cases of severe dysplasia or melanoma have been reported.

“That’s reassuring,” study author Ahuva Cices, MD, said in an interview at the annual conference of the American Society for Laser Medicine and Surgery, where she presented the results during an abstract session. “But, with that in mind, we want to avoid treating nevi with laser hair removal to avoid changes that could be concerning. We also recommend baseline skin exams so we know what we’re looking at before we start treating with lasers, and any changes can be recognized from that baseline status. It’s important to keep an eye out for changes and always be evaluating.”

Doug Brunk/MDedge News

In December of 2022, Dr. Cices, chief dermatology resident at Mount Sinai Health System, New York, searched PubMed for articles that evaluated changes in melanocytic nevi after laser hair removal procedures. She used the search terms “nevi laser hair removal,” “nevi diode,” “nevi long pulse alexandrite,” “nevi long pulse neodymium doped yttrium aluminum garnet,” and “melanoma laser hair removal,” and limited the analysis to English language patient-based reports that discussed incidental treatment of melanocytic nevi while undergoing hair removal with a laser.

Reports excluded from the analysis were those that focused on changes following hair removal with nonlaser devices such as intense pulsed light (IPL), those evaluating nonmelanocytic nevi such as Becker’s nevus or nevus of Ota, and those evaluating the intentional ablation or removal of melanocytic lesions.

The search yielded 10 relevant studies for systematic review: seven case reports or series and three observational trials, two of which were prospective and one retrospective.

The results of the review, according to Dr. Cices, revealed that clinical and dermoscopic changes were noted to present as early as 15 days after treatment and persist to the maximum follow up time, at 3 years. Commonly reported changes included regression, decreased size, laser-induced asymmetry, bleaching, darkening, and altered pattern on dermoscopy. Histologic changes included mild atypia, thermal damage, scar formation, and regression.

“Although some of the clinical and dermoscopic alterations may be concerning for malignancy, to our knowledge, there are no documented cases of malignant transformation of nevi following treatment with laser hair removal,” she wrote in the abstract.

Dr. Cices acknowledged certain limitations of the systematic review, including the low number of relevant reports and their generally small sample size, many of which were limited to single cases.

Omar A. Ibrahimi, MD, PhD, medical director of the Connecticut Skin Institute, Stamford, who was asked to comment on the review, characterized the findings as important because laser hair removal is such a commonly performed procedure.

While the study is limited by the small number of studies on the subject matter, “it brings up an important discussion,” Dr. Ibrahimi said in an interview. “Generally speaking, we know that most hair removal lasers do indeed target melanin pigment and can be absorbed by melanocytes. While the wavelengths used for LHR [laser hair removal] will not result in DNA damage or cause mutations that can lead to melanoma, they can sometimes alter the appearance of pigmented lesions and that may change the dermatologist’s ability to monitor them for atypia,” he noted.

“For that reason, I would recommend all patients see a dermatologist for evaluation of their nevi prior to any treatments and they consider very carefully where they get their laser treatments. If they have any atypical pigmented lesions, then that information should be disclosed with the person performing the laser hair removal procedure particularly if there are lesions that are being specifically monitored.”

Dr. Cices reported having no disclosures. Dr. Ibrahimi disclosed that he is a member of the advisory board for Accure Acne, AbbVie, Cutera, Lutronic, Blueberry Therapeutics, Cytrellis, and Quthero. He also holds stock in many device and pharmaceutical companies.

PHOENIX – During the incidental treatment of melanocytic nevi during laser hair removal, common clinical changes include regression and decreased size, while common histologic changes include mild atypia and thermal damage, according to results from a systematic review of literature on the topic. To date, no severe cases of severe dysplasia or melanoma have been reported.

“That’s reassuring,” study author Ahuva Cices, MD, said in an interview at the annual conference of the American Society for Laser Medicine and Surgery, where she presented the results during an abstract session. “But, with that in mind, we want to avoid treating nevi with laser hair removal to avoid changes that could be concerning. We also recommend baseline skin exams so we know what we’re looking at before we start treating with lasers, and any changes can be recognized from that baseline status. It’s important to keep an eye out for changes and always be evaluating.”

Doug Brunk/MDedge News

In December of 2022, Dr. Cices, chief dermatology resident at Mount Sinai Health System, New York, searched PubMed for articles that evaluated changes in melanocytic nevi after laser hair removal procedures. She used the search terms “nevi laser hair removal,” “nevi diode,” “nevi long pulse alexandrite,” “nevi long pulse neodymium doped yttrium aluminum garnet,” and “melanoma laser hair removal,” and limited the analysis to English language patient-based reports that discussed incidental treatment of melanocytic nevi while undergoing hair removal with a laser.

Reports excluded from the analysis were those that focused on changes following hair removal with nonlaser devices such as intense pulsed light (IPL), those evaluating nonmelanocytic nevi such as Becker’s nevus or nevus of Ota, and those evaluating the intentional ablation or removal of melanocytic lesions.

The search yielded 10 relevant studies for systematic review: seven case reports or series and three observational trials, two of which were prospective and one retrospective.

The results of the review, according to Dr. Cices, revealed that clinical and dermoscopic changes were noted to present as early as 15 days after treatment and persist to the maximum follow up time, at 3 years. Commonly reported changes included regression, decreased size, laser-induced asymmetry, bleaching, darkening, and altered pattern on dermoscopy. Histologic changes included mild atypia, thermal damage, scar formation, and regression.

“Although some of the clinical and dermoscopic alterations may be concerning for malignancy, to our knowledge, there are no documented cases of malignant transformation of nevi following treatment with laser hair removal,” she wrote in the abstract.

Dr. Cices acknowledged certain limitations of the systematic review, including the low number of relevant reports and their generally small sample size, many of which were limited to single cases.

Omar A. Ibrahimi, MD, PhD, medical director of the Connecticut Skin Institute, Stamford, who was asked to comment on the review, characterized the findings as important because laser hair removal is such a commonly performed procedure.

While the study is limited by the small number of studies on the subject matter, “it brings up an important discussion,” Dr. Ibrahimi said in an interview. “Generally speaking, we know that most hair removal lasers do indeed target melanin pigment and can be absorbed by melanocytes. While the wavelengths used for LHR [laser hair removal] will not result in DNA damage or cause mutations that can lead to melanoma, they can sometimes alter the appearance of pigmented lesions and that may change the dermatologist’s ability to monitor them for atypia,” he noted.

“For that reason, I would recommend all patients see a dermatologist for evaluation of their nevi prior to any treatments and they consider very carefully where they get their laser treatments. If they have any atypical pigmented lesions, then that information should be disclosed with the person performing the laser hair removal procedure particularly if there are lesions that are being specifically monitored.”

Dr. Cices reported having no disclosures. Dr. Ibrahimi disclosed that he is a member of the advisory board for Accure Acne, AbbVie, Cutera, Lutronic, Blueberry Therapeutics, Cytrellis, and Quthero. He also holds stock in many device and pharmaceutical companies.

PHOENIX – During the incidental treatment of melanocytic nevi during laser hair removal, common clinical changes include regression and decreased size, while common histologic changes include mild atypia and thermal damage, according to results from a systematic review of literature on the topic. To date, no severe cases of severe dysplasia or melanoma have been reported.

“That’s reassuring,” study author Ahuva Cices, MD, said in an interview at the annual conference of the American Society for Laser Medicine and Surgery, where she presented the results during an abstract session. “But, with that in mind, we want to avoid treating nevi with laser hair removal to avoid changes that could be concerning. We also recommend baseline skin exams so we know what we’re looking at before we start treating with lasers, and any changes can be recognized from that baseline status. It’s important to keep an eye out for changes and always be evaluating.”

Doug Brunk/MDedge News

In December of 2022, Dr. Cices, chief dermatology resident at Mount Sinai Health System, New York, searched PubMed for articles that evaluated changes in melanocytic nevi after laser hair removal procedures. She used the search terms “nevi laser hair removal,” “nevi diode,” “nevi long pulse alexandrite,” “nevi long pulse neodymium doped yttrium aluminum garnet,” and “melanoma laser hair removal,” and limited the analysis to English language patient-based reports that discussed incidental treatment of melanocytic nevi while undergoing hair removal with a laser.

Reports excluded from the analysis were those that focused on changes following hair removal with nonlaser devices such as intense pulsed light (IPL), those evaluating nonmelanocytic nevi such as Becker’s nevus or nevus of Ota, and those evaluating the intentional ablation or removal of melanocytic lesions.

The search yielded 10 relevant studies for systematic review: seven case reports or series and three observational trials, two of which were prospective and one retrospective.

The results of the review, according to Dr. Cices, revealed that clinical and dermoscopic changes were noted to present as early as 15 days after treatment and persist to the maximum follow up time, at 3 years. Commonly reported changes included regression, decreased size, laser-induced asymmetry, bleaching, darkening, and altered pattern on dermoscopy. Histologic changes included mild atypia, thermal damage, scar formation, and regression.

“Although some of the clinical and dermoscopic alterations may be concerning for malignancy, to our knowledge, there are no documented cases of malignant transformation of nevi following treatment with laser hair removal,” she wrote in the abstract.

Dr. Cices acknowledged certain limitations of the systematic review, including the low number of relevant reports and their generally small sample size, many of which were limited to single cases.

Omar A. Ibrahimi, MD, PhD, medical director of the Connecticut Skin Institute, Stamford, who was asked to comment on the review, characterized the findings as important because laser hair removal is such a commonly performed procedure.

While the study is limited by the small number of studies on the subject matter, “it brings up an important discussion,” Dr. Ibrahimi said in an interview. “Generally speaking, we know that most hair removal lasers do indeed target melanin pigment and can be absorbed by melanocytes. While the wavelengths used for LHR [laser hair removal] will not result in DNA damage or cause mutations that can lead to melanoma, they can sometimes alter the appearance of pigmented lesions and that may change the dermatologist’s ability to monitor them for atypia,” he noted.

“For that reason, I would recommend all patients see a dermatologist for evaluation of their nevi prior to any treatments and they consider very carefully where they get their laser treatments. If they have any atypical pigmented lesions, then that information should be disclosed with the person performing the laser hair removal procedure particularly if there are lesions that are being specifically monitored.”

Dr. Cices reported having no disclosures. Dr. Ibrahimi disclosed that he is a member of the advisory board for Accure Acne, AbbVie, Cutera, Lutronic, Blueberry Therapeutics, Cytrellis, and Quthero. He also holds stock in many device and pharmaceutical companies.