title: Exostosis of the external auditory canal: a technical note.
abstract: OBJECTIVE
  To describe the author's method of managing occlusive exostosis of the external auditory canal.
  
  
  METHODS
  Retrospective chart review.
  
  
  METHODS
  Tertiary referral ambulatory otology clinic.
  
  
  METHODS
  A case series of patients treated sequentially by the author over 15 years, all of whom had occlusive external auditory canal exostoses that could not be treated by medical management.
  
  
  METHODS
  Permeatal surgical removal of the anterior exostosis only.
  
  
  METHODS
  Surgical relief of occlusive external auditory canal disease by restoration of hearing and absence of infection with persistence of an external auditory canal and no symptoms of recurrence.
  
  
  RESULTS
  A total of 8 men were treated by anterior exostosis removal. Follow-up continued on these patients for a period of 5 to 15 years after the operation, and none showed any evidence of recurrence or tendency to narrowing of the deep ear canal. One patient incurred a tympanic membrane perforation at escostosis surgery that was repaired during the operation.
  
  
  CONCLUSIONS
  Anterior exostosis removal by a permeatal route is a safe, rapid, and effective method of relieving patients of occlusive external auditory canal exostosis. By leaving the posterior exostosis intact, patients are not put at risk for injury to the facial nerve, chorda tympani nerve, or ossicles. When the deep ear canal is drilled blind, there are no landmarks to indicate the true path of the external canal.
authors: Division of Otolaryngology, University of British Columbia, Vancouver General Hospital, 805 W. 12th Avenue, Vancouver, British Columbia V5Z 1M9, Canada.
authors: Neil S
authors: NS
authors: Longridge
mesh_terms: D000328:Adult; D004424:Ear Canal / Q000601:surgery*; D005096:Exostoses / Q000601:surgery*; D006801:Humans; D008297:Male; D013506:Otologic Surgical Procedures / Q000009:adverse effects; D012189:Retrospective Studies; D018058:Tympanic Membrane Perforation / Q000209:etiology / Q000601:surgery