Central Nervous System Solitary Fibrous Tumor, Grade 2

**Semantic type:** Neoplastic Process

**Definition:** A solitary fibrous tumor that arises from the central nervous system. It corresponds to the more cellular, less collagenous tumor with plump cells and staghorn vasculature which was diagnosed as central nervous system hemangiopericytoma in the past.

**Synonyms:** - CNS Solitary Fibrous Tumor, Grade 2 - CNS Solitary Fibrous Tumor/Hemangiopericytoma, Grade 2 - Central Nervous System Hemangiopericytoma - Central Nervous System Solitary Fibrous Tumor/Hemangiopericytoma, Grade 2 - Solitary fibrous tumor/hemangiopericytoma Grade 2 (CNS)