optic nerve neoplasm optic nerve sheath meningioma https://www.malacards.org/card/optic_nerve_sheath_meningioma MONDO:0003557 SCTID:254978007 UMLS:C0346328 ICD9:237.9 MEDGEN:138057 optic nerve sheath meningioma NCIT:C4538 A meningioma that affects the sheath of the optic nerve. DOID:5632 Editor note: TODO axiomatize meningioma of optic nerve sheath GARD:0023563 meningioma of the optic nerve sheath meningioma