title: Acoustic schwannoma presenting as a tumor of the external auditory canal. Case report.
abstract: An acoustic neurinoma involving the internal auditory canal, the vestibule, the cochlea, the middle ear, and extending into the cerebellopontine angle and the external auditory canal, is described in a 56-year-old woman. An initial episode of vertigo was followed by a 27-year history of progressive unilateral hearing loss leading to complete deafness and areflexia with central compensation. The tumor was removed by a two-step surgical procedure, and the histologic features were those of a schwannoma.
mesh_terms: D003937:Diagnosis, Differential; D004424:Ear Canal; D004428:Ear Neoplasms / Q000175:diagnosis*; D005260:Female; D034381:Hearing Loss / Q000209:etiology; D006801:Humans; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009464:Neuroma, Acoustic / Q000150:complications / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D012086:Reoperation