Cutaneous Merkel Cell Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A rare aggressive neuroendocrine carcinoma that arises from the skin and most often affects older individuals. It is usually located in the head, neck, and extremities. The tumor is composed of small round cells with scanty cytoplasm. Merkel cell polyomavirus is implicated in the majority of cases.

**Synonyms:** - Cutaneous Neuroendocrine Carcinoma - Neuroendocrine Carcinoma of Skin - Neuroendocrine Carcinoma of the Skin - Skin Merkel Cell Carcinoma - Skin Neuroendocrine Carcinoma - Trabecular Skin Carcinoma - neuroendocrine carcinoma of the skin - trabecular cancer