Adult Central Nervous System Melanocytic Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A melanocytic neoplasm that arises from the leptomeninges and occurs during adulthood.

**Synonyms:** - Adult Central Nervous System Melanocytic Tumor - Adult Primary Central Nervous System Melanocytic Neoplasm - Adult Primary Meningeal Melanocytic Neoplasm - Primary Meningeal Melanocytic Neoplasm