Meningeal Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A benign or malignant neoplasm that affects the meninges. The majority of the neoplasms arise from meningothelial cells and are called meningiomas. Non-meningothelial cell neoplasms include mesenchymal, non-meningothelial tumors, hemangiopericytomas, and melanocytic lesions.

**Synonyms:** - Meningeal Neoplasms - Meningeal Tumor - Meninges Neoplasm - Meninges Tumor - Neoplasm of Meninges - Neoplasm of the Meninges - Neoplasm of uncertain behavior of meninges, unspecified - Tumor of Meninges - Tumor of the Meninges