title: Presumed bilateral optic nerve sheath meningiomas presenting as optic neuritis.
abstract: A 30-year-old man who developed acute blurred vision in the right eye and right periocular pain on eye movement proved to have a bilateral optic neuropathy and imaging evidence suggestive of bilateral optic nerve sheath meningiomas. This is an unusual presentation for optic nerve meningioma but a reminder that this entity may mimic optic neuritis.
authors.affiliation: Department of Neurology, American University of Beirut Medical Center, Beirut, Lebanon. rs01@aub.edu.lb
authors.forename: Raja A
authors.initials: RA
authors.lastname: Sawaya
authors.forename: Charif
authors.initials: C
authors.lastname: Sidani
authors.forename: Nadim
authors.initials: N
authors.lastname: Farah
authors.forename: Roula
authors.initials: R
authors.lastname: Hourani-Risk
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000503:physiopathology; D003937:Diagnosis, Differential; D003951:Diagnostic Errors / Q000517:prevention & control*; D018450:Disease Progression; D005074:Evoked Potentials, Visual / Q000502:physiology; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008579:Meningioma / Q000175:diagnosis* / Q000503:physiopathology; D009361:Neoplasm Invasiveness / Q000473:pathology; D009900:Optic Nerve / Q000473:pathology* / Q000503:physiopathology; D019574:Optic Nerve Neoplasms / Q000175:diagnosis* / Q000503:physiopathology; D009902:Optic Neuritis / Q000175:diagnosis*; D012658:Sella Turcica / Q000473:pathology; D019292:Skull Base Neoplasms / Q000175:diagnosis / Q000503:physiopathology; D014057:Tomography, X-Ray Computed; D015354:Vision, Low / Q000209:etiology / Q000473:pathology / Q000503:physiopathology