TY - JOUR
T1 - 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
AU - Lee, Young Hen
AU - Rivas-Rodriguez, Francisco
AU - Song, Jae Jun
AU - Yang, Kyung Sook
AU - Mukherji, Suresh K.
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
KW - Computed tomography
KW - Hearing loss
KW - Superior semicircular canal dehiscence
KW - Temporal bone
UR - http://www.scopus.com/inward/record.url?scp=84897059004&partnerID=8YFLogxK
U2 - 10.1097/RCT.0b013e3182ab2afb
DO - 10.1097/RCT.0b013e3182ab2afb
M3 - Article
C2 - 24625612
AN - SCOPUS:84897059004
SN - 0363-8715
VL - 38
SP - 190
EP - 195
JO - Journal of Computer Assisted Tomography
JF - Journal of Computer Assisted Tomography
IS - 2
ER -