TY - JOUR T1 - CT recognition of optic nerve sheath meningioma: abnormal sheath visualization. JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 181 LP - 183 VL - 3 IS - 2 AU - D L Daniels AU - A L Williams AU - A Syvertsen AU - W E Gager AU - G J Harris Y1 - 1982/03/01 UR - http://www.ajnr.org/content/3/2/181.abstract N2 - Optic nerve sheath meningiomas and optic nerve gliomas can be difficult to differentiate by computed tomography (CT). Three patients with optic nerve sheath meningiomas were studied with a CT/T 8800 scanner with 1.5-mm-thick axial sections and intravenous contrast material. In each case, an abnormal optic nerve sheath was identified by CT. A soft-tissue mass arose from one side of the sheath in one patient, and the entire sheath was enlarged in two patients. This provides a basis for distinguishing optic nerve sheath meningioma from optic nerve glioma. ER -