Perioperative Practices in Dermatologic Surgery.

BACKGROUND: Mohs micrographic surgery is generally safe and well tolerated. Various perioperative practices are employed with the aim of reducing adverse events; however, implementation is variable, and limited efficacy data are available. OBJECTIVE: This study sought to assess perioperative practice patterns among dermatologic surgeons with regards to antibiotic prophylaxis (AP), anticoagulation, activity restrictions, and antiseptic choice. METHODS AND MATERIALS: Two surveys were distributed by the American College of Mohs Surgery (ACMS) and the American Society for Mohs Surgery (ASMS) to their membership via email. RESULTS: One hundres seventy-seven surgeons participated, with membership from ACMS (61%), ASMS (35%), or both organizations (4%) represented. Systemic AP is prescribed preoperatively by 96% (162/168) and postoperatively by 91% (161/177) of surgeons for variable clinical indications. Therapeutic antiplatelet and anticoagulant medications are rarely held (3%-5%, 4-7/149), whereas preventative aspirin (30%, 45/149), NSAIDs (25%, 36/145), and supplements known to have an anticoagulant effect (54%, 80/149) are more commonly held. Antiseptic choice and recommended activity restrictions vary. CONCLUSION: Perioperative practices of dermatologic surgeons are variable and, where applicable, may deviate from guidelines. These findings underscore the need for standardization and updated guidelines for perioperative practices in dermatologic surgery.

Histopathologic upgrading of cutaneous squamous cell carcinomas during Mohs micrographic surgery: A retrospective cohort study.

BACKGROUND: Initial biopsies of cutaneous squamous cell carcinomas (cSCCs) may not reveal aggressive histologic features, which would otherwise inform appropriate surgical management and patient education. OBJECTIVE: To assess the incidence of, and risk factors for, histopathologic upgrading of cSCC during Mohs micrographic surgery (MMS). METHODS: This was a retrospective cohort study of invasive cSCCs treated with MMS between 2017 and 2019 at 1 academic institution. An "upgrade" was defined as a lesser degree of differentiation (poor or moderate) and/or bony or perineural invasion identified during MMS that was not reported in histopathologic evaluation of the initial biopsy. RESULTS: Of the 1558 tumors studied, 115 (7.4%) were upgraded during MMS. In multivariate logistic regression analysis, male sex, prior field treatment, location on the ear/lip, rapid growth of cSCC, and tumor diameter ≥2 cm were significant predictors of tumor upgrading. Upgraded tumors were more likely to require ≥3 MMS stages to clear, complicated closure (flap or graft), or outside (referral) repairs. LIMITATIONS: Single-center study, retrospective, and inter-rater variability. CONCLUSIONS: A significant proportion of cSCCs is histopathologically upgraded with more aggressive features during MMS. Routinely documented patient and tumor characteristics can predict tumor upgrading and assist clinicians in directing the management of potentially high-risk cSCC patients.

Opioid Prescribing Recommendations After Mohs Micrographic Surgery and Reconstruction: A Delphi Consensus.

BACKGROUND: Prescription opioids play a large role in the opioid epidemic. Even short-term prescriptions provided postoperatively can lead to dependence. OBJECTIVE: To provide opioid prescription recommendations after Mohs micrographic surgery (MMS) and reconstruction. METHODS: This was a multi-institutional Delphi consensus study consisting of a panel of members of the American College of Mohs Surgery from various practice settings. Participants were first asked to describe scenarios in which they prescribe opioids at various frequencies. These scenarios then underwent 2 Delphi ratings rounds that aimed to identify situations in which opioid prescriptions should, or should not, be routinely prescribed. Consensus was set at ≥80% agreement. Prescription recommendations were then distributed to the panelists for feedback and approval. RESULTS: Twenty-three Mohs surgeons participated in the study. There was no scenario in which consensus was met to routinely provide an opioid prescription. However, there were several scenarios in which consensus were met to not routinely prescribe an opioid. CONCLUSION: Opioids should not be routinely prescribed to every patient undergoing MMS. Prescription recommendations for opioids after MMS and reconstruction may decrease the exposure to these drugs and help combat the opioid epidemic.

Common Skin Cancers in Older Adults Approach to Diagnosis and Management.

Skin cancers are the most common malignancies to affect older adults. The most common skin cancers, basal and squamous cell carcinoma, can usually be cured with surgery. Although less common, melanoma can be deadly when not caught in its earliest stages.

Political Activism and the Dermatologist.

The practice of medicine is governed by legislation and regulation at the state and national level. It is crucial, therefore, that dermatologists become and remain involved in the process to advocate for their patients, their practices, and the specialty itself. Maintaining a relationship with one's state and federal senators and representatives is critical for physicians to have a voice in the shaping of health care policy. Local, state, and national medical and specialty societies are a tremendous resource for physicians to remain abreast of policies affecting the practice of medicine.

Nonmelanoma Skin Cancer in Patients Older Than Age 85 Years Presenting for Mohs Surgery: A Prospective, Multicenter Cohort Study.

Importance: It has been suggested that Mohs surgery for skin cancer among individuals with limited life expectancy may be associated with needless risk and discomfort, along with increased health care costs. Objective: To investigate patient- and tumor-specific indications considered by clinicians for treatment of nonmelanoma skin cancer in older individuals. Design, Setting, and Participants: This multicenter, prospective cohort study was conducted using data from US private practice and academic centers. Included patients were those older than age 85 years presenting for skin cancer surgery and referred for Mohs surgery, with reference groups of those younger than age 85 years receiving Mohs surgery and those older than age 85 years not receiving Mohs surgery. Data were analyzed from November 2018 through January 2019. Exposures: Mohs surgery for nonmelanoma skin cancer. Main Outcomes and Measures: Reason for treatment selection. Results: Among 1181 patients older than age 85 years referred for Mohs surgery (724 [61.9%] men among 1169 patients with sex data; 681 individuals aged >85 to 88 years [57.9%] among 1176 patients with age data) treated at 22 sites, 1078 patients (91.3%) were treated by Mohs surgery, and 103 patients (8.7%) received alternate treatment. Patients receiving Mohs surgery were more likely to have tumors on the face (738 patients [68.5%] vs 26 patients [25.2%]; P < .001) and nearly 4-fold more likely to have high functional status (614 patients [57.0%] vs 16 patients [15.5%]; P < .001). Of 15 distinct reasons provided by surgeons for opting to proceed with Mohs surgery, the most common were patient desire for treatment with a high cure rate (712 patients [66.0%]), good or excellent patient functional status for age (614 patients [57.0%]), and high risk associated with the tumor based on histology (433 patients [40.2%]). Conclusions and Relevance: This study found that older patients who received Mohs surgery often had high functional status, high-risk tumors, and tumors located on the face. These findings suggest that timely surgical treatment may be appropriate in older patients given that their tumors may be aggressive, painful, disfiguring, and anxiety provoking.

Distance learning in the era of COVID-19.

The novel coronavirus (SARS-CoV-2) pandemic has necessitated a dramatic shift in how our dermatology residents and fellows are educated. Distance or online learning has become the norm, and several national and international academic societies have combined resources to assure that continuing medical education occurs during this difficult time. The purpose of this communication is to review select online resources available to dermatology trainees and to encourage our colleagues to continue to advance our specialty through distance learning.

Successful administration of sequential TVEC and pembrolizumab followed by Temozolomide in immunotherapy refractory intracranial metastatic melanoma with acquired B2M mutation.

Despite the substantial advances in the management of metastatic melanoma with the introduction of immune checkpoint inhibitors (ICI), many patients develop disease progression during treatment with immunotherapy. This has been suggested to be mediated by several mechanisms that contribute to acquired resistance to ICI, one of which is acquired beta-2 microgloubulin (B2M) mutation. Talimogene laherparepvec (TVEC) is a genetically modified oncolytic virus that can enhance antitumor immunity. Temozolomide (TMZ) is an oral alkylating agent that has been suggested to augment anti-tumor immune response. The clinical significance of TVEC and TMZ in metastatic melanoma patients who are refractory to immunotherapy is unknown. We report a case of a patient with immunotherapy refractory intracranial metastatic melanoma after initial response to ICI who had acquired B2M mutation. The patient received TVEC and pembrolizumab followed by TMZ. The patient maintained durable response of her visceral and intracranial disease for 19 months and ongoing. More research is essential to delineate whether TVEC or TMZ has efficacy in immunotherapy refractory metastatic melanoma with acquired B2M mutation.

Kallikrein 7 Promotes Atopic Dermatitis-Associated Itch Independently of Skin Inflammation.

Atopic dermatitis (AD) is a highly prevalent, itchy inflammatory skin disorder that is thought to arise from a combination of skin barrier defect and immune dysregulation. Kallikreins (KLK), a family of serine proteases with a diverse array of homeostatic functions, including skin desquamation and innate immunity, are hypothesized to contribute to AD pathogenesis. However, their precise role in AD has not been clearly defined. In this study, RNA sequencing analyses identified KLK7 as the most abundant and differentially expressed KLK in both human AD and murine AD-like skin. Further, in mice, Klk7 expression was localized to the epidermis in both steady state and inflammation. Unexpectedly, KLK7 was dispensable for the development of AD-associated skin inflammation. Instead, KLK7 was selectively required for AD-associated chronic itch. Even without the alleviation of skin inflammation, KLK7-deficient mice exhibited significantly attenuated scratching, compared with littermate controls, after AD-like disease induction. Collectively, our findings indicate that KLK7 promotes AD-associated itch independently from skin inflammation and reveal a previously unrecognized epidermal-neural mechanism of AD associated itch.