title: Congenital external auditory canal stenosis and partial atretic plate.
abstract: OBJECTIVE
  To report outcomes of surgery for severe congenital external auditory canal (EAC) stenosis with or without partial atretic plate (PAP).
  
  
  METHODS
  Retrospective review.
  
  
  METHODS
  Thirteen patients (18 ears) had surgery for severe EAC stenosis with (n=10, 56%) or without PAP (n=8, 44%). Indications included severe stenosis with hearing loss, cerumen impactions, and/or canal cholesteatoma. Mean age=7.8 years (range 0.4-19.9 years). Mean follow up=5.2 years (range 0.4-10.0 years).
  
  
  METHODS
  Tertiary care children's hospital.
  
  
  METHODS
  Nineteen endaural canaloplasties were performed in 17 ears (2 revisions). There was one post-auricular approach. Fifteen tympanoplasties were performed in 13 ears (2 revisions). PAP was reconstructed with drilling to enlarge the bony annulus and fascia grafting to enlarge the tympanic membrane in 10 (56%) ears.
  
  
  METHODS
  Patency of EACs; otologic findings; pure tone averages (PTA); complications.
  
  
  RESULTS
  All (100%) EACs had improved patency (>or=4mm). Findings included canal cholesteatoma (2/18, 11%), ossicular fixation (4/18, 22%), stapes abnormality (2/18, 11%), and incudostapedial discontinuity from cholesteatoma (1/18, 6%). Mean preoperative PTA=38.7 dB HL (range 60-20 dB HL). Mean post-operative PTA=23.6 dB HL (range 50-6.7 dB HL). Audiologic results were significantly better for cases without PAP (p<.01) and without ossicular fixation (p<.01). There were seven minor and no major complications.
  
  
  CONCLUSIONS
  Endaural canaloplasty is safe and effective for providing patent EACs and hearing improvement for severe congenital EAC stenosis. However, since hearing outcomes were worse for cases with PAP and ossicular fixation, alternatives such as hearing aids or BAHA may be considered.
authors.affiliation: Department of Pediatric Otolaryngology, Children's Hospital of Pittsburgh of UPMC, Department of Otolaryngology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA. yellra@chp.edu
authors.forename: Robert F
authors.initials: RF
authors.lastname: Yellon
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003251:Constriction, Pathologic / Q000601:surgery; D004424:Ear Canal / Q000002:abnormalities / Q000601:surgery; D004427:Ear Diseases / Q000151:congenital / Q000601:surgery*; D004431:Ear, External / Q000002:abnormalities / Q000601:surgery*; D006801:Humans; D007223:Infant; D012189:Retrospective Studies; D055815:Young Adult