title: [The clinical characteristics and the treatment of external auditory canal cholesteatoma].
abstract: OBJECTIVE
  To evaluated the characteristics, stage classification and treatment of external auditory canal cholesteatoma (EACC).
  
  
  METHODS
  Fifty-nine cases (60 ears) with EACC undergoing surgery were retrospectively analyzed in our study.
  
  
  RESULTS
  Hearing impairment, otalgia and otorrhea were common symptoms of EACC patients. A total of 60 ears were classified into 4 stages: Stage I (26 ears) underwent canaloplasty, stage II (14 cars) underwent both canaloplasty and tympanoplasty, stage III (19 ears) underwent mastoidectomy, and stage IV (1 ear) required both canaloplasty and neoplasty of capsula articularis articulations temporomandibular.
  
  
  CONCLUSIONS
  Besides the lesion in external auditory canal, EACC also invaded into the middle ear and the temporal bone. Stage classification by the signs of the temporal bone computed tomography and the patients' clinical findings was helpful for surgery.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
authors.forename: Bei
authors.initials: B
authors.lastname: Chen
authors.forename: Fanglei
authors.initials: F
authors.lastname: Ye
authors.forename: Le
authors.initials: L
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D002781:Cholesteatoma / Q000000981:diagnostic imaging / Q000601:surgery*; D004424:Ear Canal / Q000000981:diagnostic imaging / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011859:Radiography; D012189:Retrospective Studies; D013701:Temporal Bone / Q000000981:diagnostic imaging; D014433:Tympanoplasty; D055815:Young Adult