Osteochondroma of the Central Nervous System

**Semantic type:** Neoplastic Process

**Definition:** A benign osteocartilaginous tumor usually arising from the dura. Histologically, it corresponds to similar tumors arising in bone, but should be differentiated from asymptomatic dural calcification, ossification related to metabolic disease or trauma, and neuroectodermal tumors such as astrocytoma and gliosarcoma that occasionally show osseous or chondroid differentiation. (Adapted from WHO.)

**Synonyms:** - CNS Osteochondroma - Central Nervous System Osteochondroma - Osteochondroma of CNS - Osteochondroma of Central Nervous System - Osteochondroma of the CNS