title: Giant cell reparative granuloma of the temporal bone successfully resected with preservation of hearing.
abstract: OBJECTIVE
  To describe a case of giant cell reparative granuloma of the temporal bone which extended into the middle-ear cavity, and which was successfully treated surgically via a transmastoid approach, with hearing preservation.
  
  
  METHODS
  A 37-year-old man presented with a one-year history of right-sided hearing loss, complicated by a three-month history of otalgia and a sensation of aural fullness. Computed tomography and magnetic resonance imaging demonstrated an osteolytic tumour lesion in the right temporal bone. The diagnosis was confirmed by biopsy from the mastoid lesion. INVESTIGATION AND INTERVENTION: Pure-tone audiometry, computed tomography and magnetic resonance imaging were conducted, followed by total resection.
  
  
  RESULTS
  The giant cell reparative granuloma of the temporal bone was completely resected, with preservation of hearing.
  
  
  CONCLUSIONS
  Although this patient's giant cell reparative granuloma of the temporal bone extended into the middle-ear cavity, total resection was achieved, with preservation of hearing. To the best of our knowledge, hearing preservation following resection of giant cell reparative granuloma of the temporal bone has not previously been reported.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan. ent2003jp@yahoo.co.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Takata
authors.forename: H
authors.initials: H
authors.lastname: Hidaka
authors.forename: K
authors.initials: K
authors.lastname: Ishida
authors.forename: T
authors.initials: T
authors.lastname: Kobayashi
mesh_terms: D000328:Adult; D001301:Audiometry, Pure-Tone; D004432:Ear, Middle / Q000000981:diagnostic imaging / Q000473:pathology; D006101:Granuloma, Giant Cell / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D046088:Hearing Loss, Unilateral / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012888:Skull Neoplasms / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D013701:Temporal Bone / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome