Meningeal Sarcomatosis

**Semantic type:** Neoplastic Process

**Definition:** A rare condition characterized by diffuse spread of sarcoma cells throughout the meninges. The neoplastic cells are derived from meningeal connective tissue. Clinically, this disorder may present as a fulminant pachymeningitis and/or encephalitis.

**Synonyms:** - Meningeal sarcomatosis - Meninges Sarcomatosis - Sarcomatosis of Meninges - Sarcomatosis of the Meninges