title: Cases from the aerospace medicine resident's teaching file. Case #49. Evaluation of an aviator with unilateral ptosis presenting a differential diagnosis of ocular myasthenia gravis, Tolosa-Hunt syndrome, and aneurysm of the posterior communicating artery is presented.
authors.affiliation: Aeromedical Centre, Republic of Singapore Air Force, Paya Lebar Airport.
authors.forename: C M
authors.initials: CM
authors.lastname: Peng
authors.forename: F
authors.initials: F
authors.lastname: Oen
mesh_terms: D000337:Aerospace Medicine; D001763:Blepharoptosis / Q000175:diagnosis* / Q000209:etiology; D003937:Diagnosis, Differential; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D009157:Myasthenia Gravis / Q000150:complications / Q000175:diagnosis*; D009886:Ophthalmoplegia / Q000150:complications / Q000175:diagnosis*