Melanocytoma

**Semantic type:** Neoplastic Process

**Definition:** A usually benign neoplasm that arises from the sun-exposed skin, eye, and meninges. It is composed of spindle and/or epithelioid melanocytes and melanophages. It rarely progresses to melanoma.

**Synonyms:** - Magnocellular Nevus - Magnocellular nevus - Melanocytoma, NOS