Optic Nerve Sheath Solitary Fibrous Tumor

**Semantic type:** Neoplastic Process

**Definition:** A rare solitary fibrous tumor that arises from the optic nerve sheath.

**Synonyms:** - Optic Nerve Solitary Fibrous Tumor - Solitary Fibrous Tumor of the Optic Nerve Sheath - Solitary Fibrous Tumor/Hemangiopericytoma of the Optic Nerve Sheath