title: Cystic optic nerve sheath meningioma.
abstract: A 58-year-old woman with a 35-year history of left proptosis underwent neuroimaging that revealed a large cystic lesion. Surgery revealed an optic nerve sheath meningioma associated with cyst formation. The cyst was part of the tumor, a phenomenon that is well described in intracranial meningiomas but not in optic nerve sheath meningiomas.
authors.affiliation: Clinical Emergency Sf. Pantelimon Hospital, Bucharest, Romania. rosca_tatiana@yahoo.com
authors.forename: Tatiana I
authors.initials: TI
authors.lastname: Rosca
authors.forename: Benone D
authors.initials: BD
authors.lastname: Carstocea
authors.forename: Teodora Gh
authors.initials: TG
authors.lastname: Vlãdescu
authors.forename: Cecilia
authors.initials: C
authors.lastname: St Tihoan
authors.forename: Gheorghe-Gabriel Gh
authors.initials: GG
authors.lastname: Gherghescu
mesh_terms: D003937:Diagnosis, Differential; D005094:Exophthalmos / Q000175:diagnosis / Q000209:etiology; D005260:Female; D006801:Humans; D008579:Meningioma / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D008875:Middle Aged; D018317:Nerve Sheath Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D019574:Optic Nerve Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed