The prevalence of superior semicircular canal dehiscence in conductive and mixed hearing loss in the absence of other pathology using submillimetric temporal bone computed tomography

Young Hen Lee, Francisco Rivas-Rodriguez, Jae Jun Song, Kyung Sook Yang, Suresh K. Mukherji

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

OBJECTIVE: The objective of this study was to assess the relationship between superior semicircular canal dehiscence (SSCD) and hearing impairment. METHODS: We retrospectively compared the prevalence of SSCD in the ears classified as conductive hearing loss (CHL), mixed hearing loss (MHL), and normal hearing status using submillimetric temporal bone computed tomography (TBCT) on the basis of coronal and additional reformatted planes dedicated to SSCD. RESULTS: From the patients with CHL (n = 127) and MHL (n = 45), the overall prevalence of SSCD in the ears classified as CHL, MHL, and normal hearing status were 6.6%, 7.2%, and 3.0%, respectively. Furthermore, the odds ratio for SSCD in the absence of any cause of hearing loss (eg, dysfunction of the tympanic membrane or middle ear, TBCT abnormalities, otosclerosis, trauma, surgery) was 5.35 in MHL (4/27; P = 0.037, 95% confidence interval, 1.1-25.81) and 3.31 in CHL (5/61; P = 0.115, 95% confidence interval, 0.75-14.63), compared with normal hearing status. CONCLUSIONS: Bony covering of the SSC should be specifically evaluated in patients with hearing impairment using submillimetric TBCT.

Original languageEnglish
Pages (from-to)190-195
Number of pages6
JournalJournal of Computer Assisted Tomography
Volume38
Issue number2
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • Computed tomography
  • Hearing loss
  • Superior semicircular canal dehiscence
  • Temporal bone

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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