Sensorineural hearing loss: there is no correlation with isolated dysplasia of the lateral semi-circular canal on temporal bone CT

Background Inner ear malformations may cause sensorineural hearing loss (SNHL). However, the correlation between the small lateral semi-circular canal (LSCC) and SNHL is controversial. Purpose To determine whether there is a correlation between the two using CT-based measurement. Material and Method...

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Bibliographic Details
Published in:Acta radiologica (1987) 2011-03, Vol.52 (2), p.229-233
Main Authors: Yamashita, Koji, Yoshiura, Takashi, Hiwatashi, Akio, Tuvshinjargal, Dashjamts, Kamano, Hironori, Inoguchi, Takashi, Honda, Hiroshi
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Biological and medical sciences
Body Weights and Measures - methods
Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology
Female
Hearing Loss, Sensorineural - diagnostic imaging
Humans
Male
Medical sciences
Middle Aged
Non tumoral diseases
Observer Variation
Otorhinolaryngology. Stomatology
Retrospective Studies
Semicircular Canals - abnormalities
Semicircular Canals - diagnostic imaging
Temporal Bone - diagnostic imaging
Tomography, X-Ray Computed - methods
Young Adult
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Summary:Background Inner ear malformations may cause sensorineural hearing loss (SNHL). However, the correlation between the small lateral semi-circular canal (LSCC) and SNHL is controversial. Purpose To determine whether there is a correlation between the two using CT-based measurement. Material and Methods We retrospectively reviewed the high-resolution CT images of the temporal bone obtained from consecutive patients. A total 136 ears of 68 patients (25 men and 43 women; age range 20–85 years, mean 49.8 years) were included in this study. Patients who were clinically suspected to have otosclerosis were also excluded. Two radiologists independently measured the width and cross-sectional area of the bony island of LSCC. We evaluated the correlation between LSCC bone island width or cross-sectional area and hearing level in all cases using Pearson correlation co-efficients. In addition, we compared hearing levels among the patient group with normal-sized LSCC (≧mean-SD), small LSCC (
ISSN:0284-1851
1600-0455
DOI:10.1258/ar.2010.100324