title: Conductive hearing loss after removal of acoustic neuroma.
abstract: OBJECTIVE
  To report 4 patients who have developed a conductive and/or mixed hearing loss due to dehiscence of the inner ear after retrosigmoid approach for removal of acoustic neuroma.
  
  
  METHODS
  Four patients who presented with conductive and/or mixed hearing loss after retrosigmoid approach for removal of acoustic neuroma.
  
  
  METHODS
  Evidence of inner ear dehiscence on postoperative computed tomographic scan of the temporal bones.
  
  
  CONCLUSIONS
  The occurrence of conductive hearing loss after the surgical removal of an acoustic neuroma has not previously been documented. Computed tomographic scan of the temporal bones showing inner ear dehiscence may explain this finding. Formal documentation of such cases may allow techniques to be developed to reduce its occurrence or reconstruction of the defect at the time of primary surgery.
authors.affiliation: Christchurch Public Hospital, Christchurch, New Zealand.
authors.forename: Angela
authors.initials: A
authors.lastname: Scarlett
authors.forename: Philip
authors.initials: P
authors.lastname: Bird
authors.forename: Martin
authors.initials: M
authors.lastname: Macfarlane
mesh_terms: D000158:Acoustic Impedance Tests; D000328:Adult; D000368:Aged; D001299:Audiometry; D003390:Cranial Nerve Neoplasms / Q000150:complications* / Q000601:surgery*; D005260:Female; D006310:Hearing Aids; D006314:Hearing Loss, Conductive / Q000209:etiology* / Q000503:physiopathology* / Q000628:therapy; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000150:complications* / Q000601:surgery*; D013506:Otologic Surgical Procedures; D038781:Otoscopy; D010579:Petrous Bone / Q000473:pathology; D011183:Postoperative Complications / Q000503:physiopathology*; D013067:Speech Perception; D014057:Tomography, X-Ray Computed; D000160:Vestibulocochlear Nerve Diseases / Q000150:complications* / Q000601:surgery*