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  • Title: Vestibular hydrops in patients with semicircular canal malformation.
    Author: Niu Y, Chen W, Lin M, Sha Y.
    Journal: Auris Nasus Larynx; 2023 Oct; 50(5):727-732. PubMed ID: 36740469.
    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.
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