title: Sensorineural Hearing Loss in Cholesteatoma.
abstract: OBJECTIVE
  To determine whether middle ear cholesteatoma is associated with, sensorineural hearing loss, and whether patient age, cholesteatoma growth pattern, or, air bone gap size contribute to inner ear impairment.
  
  
  METHODS
  Cross-sectional comparative.
  
  
  METHODS
  A tertiary hospital.
  
  
  METHODS
  The subjects were 115 patients with middle ear cholesteatoma in one ear, and normal video-otoscopy in the contralateral ear (CLE).
  
  
  METHODS
  Otoendoscopy, pure-tone audiometry.
  
  
  METHODS
  Bone conduction (BC) threshold differences between the normal CLE and the cholesteatoma ear. Comparisons of these differences between different cholesteatoma growth patterns. Correlation between the air bone gap size in the ear with cholesteatoma and the difference in bone conduction thresholds between both ears.
  
  
  RESULTS
  The cholesteatoma ear was associated with greater BC thresholds than the CLE. With regard to different cholesteatoma growth patterns, the differences between associated BC thresholds were also significant in all groups at all frequencies, with the exception of the two routes of cholesteatoma group at 500  Hz. Comparing BC threshold differences, they were greater in the adult group at 500  Hz. The correlation between the air bone gap media in the ear with cholesteatoma and the difference in bone conduction thresholds between both ears was direct and moderate.
  
  
  CONCLUSIONS
  Cholesteatoma was associated with greater BC thresholds at all frequencies tested. The differences were independent of cholesteatoma growth patterns. As bigger the air bone gap in the ear with cholesteatoma, greater the inner ear damage.
authors.affiliation: *Department of Otolaryngology-Head and Neck Surgery, Hospital de Clinicas de Porto Alegre †Mother of God Health System ‡Department of Health and Human Communication, Federal University of Rio Grande do Sul §Department of Ophthalmology and Otolaryngology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Letícia Schmidt
authors.initials: LS
authors.lastname: Rosito
authors.forename: Luciana Silveira
authors.initials: LS
authors.lastname: Netto
authors.forename: Adriane Ribeiro
authors.initials: AR
authors.lastname: Teixeira
authors.forename: Sady Selaimen
authors.initials: SS
authors.lastname: da Costa
mesh_terms: D000328:Adult; D000368:Aged; D001301:Audiometry, Pure-Tone; D001844:Bone Conduction; D018424:Cholesteatoma, Middle Ear / Q000150:complications*; D003430:Cross-Sectional Studies; D005260:Female; D006319:Hearing Loss, Sensorineural / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged