title: Unusual glioma of the optic nerve.
abstract: A 3 1/2-year-old white girl presented with unilateral proptosis and an orbital tumor that was diagnosed histopathologically as an unusual form of glioma of the optic nerve. The optic foramen was not enlarged but the ultrasonogram indicated a definite retrobulbar mass.
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D005910:Glioma / Q000150:complications / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D006801:Humans; D009900:Optic Nerve / Q000473:pathology*; D010524:Peripheral Nervous System Neoplasms / Q000150:complications / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D014786:Vision Disorders / Q000209:etiology