Meningeal Melanomatosis

**Semantic type:** Neoplastic Process

**Definition:** A rare condition in patients with leptomeningeal melanoma characterized by diffuse or multifocal proliferation of melanoma cells in the leptomeninges. It is often associated with invasion of the central nervous system.

**Synonyms:** - Leptomeningeal Melanomatosis - Melanomatosis - Meningeal melanomatosis