title: Ten-year results of canal wall down mastoidectomy for acquired cholesteatoma.
abstract: OBJECTIVE
  To examine 10-year results of canal wall down mastoidectomy (CWDM) for acquired cholesteatoma.
  
  
  METHODS
  Medical records of 136 patients with cholesteatoma who has undergone CWDM in a university hospital and who had a follow-up of at least 10 years were checked.
  
  
  RESULTS
  During follow-up, 21% of patients had undergone one revision operation and 3% two revisions. The recurrence rate of cholesteatoma was 17% and in three patients the cholesteatoma recurred twice. Ten years after CWDM, 98% of the operated ears were dry, 1% moist, and one ear (0.7%) was discharging. The tympanic membrane was intact in 92% and perforated in 8%. Only 14% of patients had hearing levels of 20 dB or better and 46% had 40 dB or better.
  
  
  CONCLUSIONS
  It is concluded that the surgical technique of CWDM should be improved in order to lower the recurrence rate and to improve hearing results.
authors.affiliation: Department of Otolaryngology, Kuopio University Hospital, FIN-70210, Kuopio, Finland.
authors.forename: E
authors.initials: E
authors.lastname: Vartiainen
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D018424:Cholesteatoma, Middle Ear / Q000601:surgery*; D004424:Ear Canal / Q000601:surgery*; D005260:Female; D006309:Hearing; D006801:Humans; D008297:Male; D008416:Mastoid / Q000601:surgery*; D008875:Middle Aged; D013506:Otologic Surgical Procedures; D011184:Postoperative Period; D012008:Recurrence; D012086:Reoperation; D013997:Time Factors