title: Lipochoristoma of the internal auditory canal.
abstract: OBJECTIVE
  Approximately 90% of tumours of cerebellopontine angle and internal auditory canal are vestibular schwannomas (acoustic neuromas) and meningiomas. Lipochoristomas are rare benign masses that represent only 0.15% of cases.
  
  
  METHODS
  We report the case of a 39-year-old man who consulted us for right-sided hearing loss and tinnitus.
  
  
  RESULTS
  Tonal audiometry showed a down-sloping right sensorineural hearing loss in frequencies above 2000 Hz. Magnetic resonance imaging (MRI) revealed a heterogeneous lesion in the right internal auditory canal with areas of hyperintensity on noncontrast T1-weighted MRI and suppression of much of the signal of the lesion with persistence of some areas of enhancement on T1-weighted fat-suppressed images.
  
  
  CONCLUSIONS
  Correct imaging diagnosis through MRI (high signal intensity on noncontrast T1-weighted images together with a missing signal in fat suppression sequences) is essential in order to avoid unnecessary surgery or radiation therapy, which are not recommended in the treatment of these lesions.
authors: Department of Otorhinolaryngology, H. U. Puerta de Hierro-Majadahonda, Madrid, Spain. beatrizdediego@yahoo.es
authors: B
authors: B
authors: De Diego
authors: A
authors: A
authors: Trinidad
authors: A
authors: A
authors: Ibáñez
authors: G
authors: G
authors: Saucedo
authors: J
authors: J
authors: Vicente
authors: F M
authors: FM
authors: González
authors: R
authors: R
authors: Ramírez-Camacho
mesh_terms: D000328:Adult; D002828:Choristoma / Q000175:diagnosis* / Q000628:therapy; D004424:Ear Canal; D006801:Humans; D008297:Male