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

Abstract

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 (<mean-SD) and very small LSCC (<mean-2SD) as defined by the width and cross-sectional area of the bony island using Student's t-test. Results: 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. No significant correlation was shown between LSCC bony island width  More>>
Authors:
Yamashita, Koji; Yoshiura, Takashi; Hiwatashi, Akio; Tuvshinjargal, Dashjamts; Kamano, Hironori; Honda, Hiroshi; [1]  Inoguchi, Takashi [2] 
  1. Dept. of Clinical Radiology, Graduate School of Medical Sciences, Kyushu Univ. Fukuoka (Japan)
  2. Dept. of Otolaryngology, Kitakyushu Municipal Medical Center, Kitakyushu (Japan)
Publication Date:
Feb 15, 2011
Product Type:
Journal Article
Resource Relation:
Journal Name: Acta Radiologica (online); Journal Volume: 52; Journal Issue: 2; Other Information: 16 refs., 3 figs.; 10.1258/AR.2010.100324
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; AUDITORY ORGANS; MALFORMATIONS; COMPUTERIZED TOMOGRAPHY; SKULL
OSTI ID:
1010777
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1600-0455; TRN: SE1108047
Availability:
Available from DOI: http://dx.doi.org/10.1258/ar.2010.100324
Submitting Site:
SWDN
Size:
page(s) 229-233
Announcement Date:
Apr 11, 2011

Citation Formats

Yamashita, Koji, Yoshiura, Takashi, Hiwatashi, Akio, Tuvshinjargal, Dashjamts, Kamano, Hironori, Honda, Hiroshi, and Inoguchi, Takashi. Sensorineural hearing loss: there is no correlation with isolated dysplasia of the lateral semi-circular canal on temporal bone CT. Sweden: N. p., 2011. Web. doi:10.1258/AR.2010.100324.
Yamashita, Koji, Yoshiura, Takashi, Hiwatashi, Akio, Tuvshinjargal, Dashjamts, Kamano, Hironori, Honda, Hiroshi, & Inoguchi, Takashi. Sensorineural hearing loss: there is no correlation with isolated dysplasia of the lateral semi-circular canal on temporal bone CT. Sweden. doi:10.1258/AR.2010.100324.
Yamashita, Koji, Yoshiura, Takashi, Hiwatashi, Akio, Tuvshinjargal, Dashjamts, Kamano, Hironori, Honda, Hiroshi, and Inoguchi, Takashi. 2011. "Sensorineural hearing loss: there is no correlation with isolated dysplasia of the lateral semi-circular canal on temporal bone CT." Sweden. doi:10.1258/AR.2010.100324. https://www.osti.gov/servlets/purl/10.1258/AR.2010.100324.
@misc{etde_1010777,
title = {Sensorineural hearing loss: there is no correlation with isolated dysplasia of the lateral semi-circular canal on temporal bone CT}
author = {Yamashita, Koji, Yoshiura, Takashi, Hiwatashi, Akio, Tuvshinjargal, Dashjamts, Kamano, Hironori, Honda, Hiroshi, and Inoguchi, Takashi}
abstractNote = {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 (<mean-SD) and very small LSCC (<mean-2SD) as defined by the width and cross-sectional area of the bony island using Student's t-test. Results: 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. No significant correlation was shown between LSCC bony island width or cross sectional area and hearing level (P>0.05). No significant difference in hearing levels were found among groups of the normal-sized, small and very small LSCC (P>0.05). Conclusion: We conclude that there is no correlation between isolated small LSCC and SNHL}
doi = {10.1258/AR.2010.100324}
journal = {Acta Radiologica (online)}
issue = {2}
volume = {52}
place = {Sweden}
year = {2011}
month = {Feb}
}