title: [Sudden hearing loss in a patient with a 3-mm acoustic tumor].
abstract: Sudden sensorineural hearing loss (SNHL) accounts for 1% of all SNHL cases. It has been reported that acoustic neuroma may be present up to 47.5% of patients with sudden SNHL. A 55-year-old man presented with sudden hearing loss in his left ear of 45-day history. Audiologic and transient evoked otoacoustic emission tests showed near-total hearing loss and absence of emissions in the left ear, respectively. Electronystagmography showed left canal paralysis and lack of response to the Kobrak test. The interpeak interval I-V latency and interaural amplitude differences in wave V latency were prolonged in auditory brainstem response. Computed tomography showed an increase in the diameter of the left internal acoustic canal, and magnetic resonance imaging (MRI) revealed an intracanalicular mass, 3 mm in size, originating from the left cochlear nerve. Another mass (18x17 mm) was detected that filled the right pontocerebellar cistern, suggesting a meningioma, but this was not thought to exert an obvious shift effect contributing to the development of left-sided hearing loss. Despite treatment with a tapered course of fluocortolone for 18 days the patient's hearing level did not change. He was included in a follow-up with MRI at six-month intervals.
authors.affiliation: Department of Otolaryngology, Başkent University Adana Training and Research Medical Center, Adana, Turkey. iy38@yahoo.com
authors.forename: Ismail
authors.initials: I
authors.lastname: Yilmaz
authors.forename: Seyra
authors.initials: S
authors.lastname: Erbek
authors.forename: Selim
authors.initials: S
authors.lastname: Erbek
authors.forename: Ozlem
authors.initials: O
authors.lastname: Ulusoy
authors.forename: Tarkan
authors.initials: T
authors.lastname: Calişaneller
mesh_terms: D000893:Anti-Inflammatory Agents / Q000008:administration & dosage / Q000627:therapeutic use; D003937:Diagnosis, Differential; D005448:Fluocortolone / Q000008:administration & dosage / Q000627:therapeutic use; D006319:Hearing Loss, Sensorineural / Q000209:etiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000473:pathology; D014057:Tomography, X-Ray Computed
chemical_list: D000893:Anti-Inflammatory Agents; D005448:Fluocortolone