Merkel Cell Carcinoma of Atypical Location: Case Report and Review of the Literature

Merkel cell carcinomas are rare and aggressive skin tumours, with a high risk of local, lymph node and metastatic recurrence, and a guarded prognosis. Their preferred location is in sun-exposed areas. Surgery remains the cornerstone of treatment, with recommended lateral margins of up to 3 cm, including the underlying fascia, in order to limit the risk of recurrence. Adjuvant radiotherapy improves local and regional survival, given the radiosensitivity of these carcinomas. We report an atypical case of Merkel cell carcinoma in the gluteal region, managed by a multidisciplinary team combining surgery and radiotherapy.