Understanding Mohs Micrographic Surgery: A Review and Practical Guide for the Nondermatologist.

The incidence and diagnosis of cutaneous malignancies are steadily rising. In addition, with the aging population and increasing use of organ transplant and immunosuppressive medications, subsets of patients are now more susceptible to skin cancer. Mohs micrographic surgery (MMS) has become the standard of care for the treatment of high-risk nonmelanoma skin cancers and is increasingly used to treat melanoma. Mohs micrographic surgery has the highest cure rates, spares the maximal amount of normal tissue, and is cost-effective for the treatment of cutaneous malignancies. As in other medical fields, appropriate use criteria were developed for MMS and have become an evolving guideline for determining which patients and tumors are appropriate for referral to MMS. Patients with cutaneous malignancies often require multidisciplinary care. With the changing landscape of medicine and the rapidly increasing incidence of skin cancer, primary care providers and specialists who do not commonly manage cutaneous malignancies will need to have an understanding of MMS and its role in patient care. This review better familiarizes the medical community with the practice of MMS, its utilization and capabilities, differences from wide excision and vertical section pathology, and cost-effectiveness, and it guides practitioners in the process of appropriately evaluating and determining when patients with skin cancer might be appropriate candidates for MMS.

Early clinical presentations and progression of calciphylaxis.

BACKGROUND: Untreated calciphylaxis is a fatal disease of intra- and extravascular calcification, most commonly presenting in end-stage renal disease (ESRD) patients. While early identification is critical for timely treatment, early-stage clinical and histopathological descriptions have not, to our knowledge, been elucidated. As early clinical recognition is essential to prompt definitive histopathological diagnosis, this study describes a range of clinical and histopathological manifestations of early-stage calciphylaxis. METHODS: Five patients with clinical photographs of lesions of early-phase calciphylaxis were chosen from a recent database of 101 patients. Their clinical histories were reviewed and correlated with their respective clinical and histopathological images of early-stage disease and progression of the disease. RESULTS: Two of the five patients were identified early to have calciphylaxis and were promptly initiated on aggressive, multimodal therapy, resulting in complete resolution and remission of calciphylaxis. The other three patients were also recognized in early stages, one without renal disease, although the disease had progressed to more advanced stages associated with greater morbidity and mortality. CONCLUSIONS: These cases demonstrate that calciphylaxis may be clinically misdiagnosed due to ill-defined presentations, particularly in the early stages without the characteristic features of livedo racemosa and ulceration. However, recognition in the early stages is critical to implement timely treatment. As such, definitively diagnostic skin biopsy should be considered early in suspected cases to confirm the diagnosis of calciphylaxis and ensure prompt management of this lethal disease.

Leiomyosarcoma of the skin: clinical, histopathologic, and prognostic factors that influence outcomes.

BACKGROUND: Superficial leiomyosarcoma (LMS) is a rare tumor with important clinical, pathologic, and treatment features. Previous LMS studies have included few patients, included minimal follow-up, and typically combined the superficial and subfascial (deep) forms. OBJECTIVE: We sought to characterize clinical features, effectiveness of treatment approaches, and long-term outcomes for LMS stratified by depth of invasion. METHODS: In all, 71 cases of primary superficial LMS, 48 dermal and 23 subcutaneous (mean follow-up of 8 years), were examined and clinical, histopathologic, and treatment factors reported. RESULTS: Tumor size and subcutaneous classification correlated with greater likelihood of metastasis and death at 5 years. When superficial LMS metastasizes, other skin sites are the most common distant location. Treatment with wide local excision with minimum 1-cm margins showed statistically lower rates of recurrences and metastasis compared with excision with narrow surgical margins. Fourteen cases of Mohs micrographic surgery had no recurrences or metastases. Five cases of dermal LMS metastasized, 2 of which resulted in death. LIMITATIONS: This study is a retrospective review of a relatively small number of patients. CONCLUSION: LMS can metastasize and warrants surgical intervention and long-term follow-up. Wide local excision, and Mohs micrographic surgery in particular, appear to provide the best management approach for definitive treatment.