Abstract
Objective
To investigate the vestibular endolymphatic hydrops in patients with semicircular
canal malformation.
Methods
We searched 7864 patients who underwent MR Imaging after contrast injection and found
21 patients with semicircular canal malformations. Another 9 non-malformed patients
with unilateral hearing loss were randomly included. We asked patients about their
medical history and measured the volume of total vestibular fluid space and endolymphatic
space. The vestibular volume ratio = endolymphatic space/total fluid space × 100.
Results
Hearing loss was observed in 18 of 30 malformed ears and in 7 of 12 non-malformed
ears. Statistical analysis showed no association between semicircular canal malformation
and hearing loss. In the semicircular canal malformation group, the average vestibular
volume ratio (22.6%) in the ears with hearing loss was higher than that in the ears
without hearing loss (11.4%). There was no statistically significant difference in
the average vestibular %EL in ears with hearing loss between the malformed inner ear
group (22.6%) and non-malformed group (28.2%) (P>0.05).
Conclusion
There was no correlation between semicircular canal malformation and hearing loss.
The mean vestibular hydrops volume ratio of the semicircular canal deformed ears with
hearing loss was about 22.6%, which was not different from that of normal ears.
Keywords
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Article info
Publication history
Published online: February 04, 2023
Accepted:
January 24,
2023
Received:
November 7,
2022
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2023 Japanese Society of Otorhinolaryngology-Head and Neck Surgery, Inc. Published by Elsevier B.V. All rights reserved.
