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KMID : 1235520210200030108
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Research in Vestibular Science
2021 Volume.20 No. 3 p.108 ~ p.112
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Superior Semicircular Canal Dehiscence Syndrome Manifested as Meniere’s Disease: A Case Report
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Kim Byeong-Jin
Yang Yun-Na
Lee Chan-Mi
Lee Eun-Jung
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Abstract
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The absence of a temporal bone overlying the superior semicircular canal causes superior semicircular canal dehiscence (SSCD). The vestibular symptom of SSCD syndrome (SCDS) is vertigo and audiologic symptoms include autophony, hyperacusis, and ear fullness. A 52-year-old man presented with left-sided unilateral hearing loss, aural fullness, and recurrent spinning-type vertigo. He had positive Hennebert sign and mixed-type hearing loss, with a prominent low-frequency air-bone gap. These symptoms reminded us of SCDS, and computed tomography (CT) revealed SSCD. However, the patient had not experienced vertigo until 1 week prior to the visit. In addition, the audiogram revealed fluctuation of hearing, which was aggravated when the vestibular symptoms manifested. Vertigo might be due to Meniere’s disease rather than SCDS and SSCD was incidentally detected on CT. According to reviews, this is no reported case of SCDS manifested as Meniere’s disease, so we report this case with a brief review of the literature.
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KEYWORD
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Semicircular canal dehiscence, Superior semicircular canal dehiscence syndrome, Meniere’s disease, Hearing fluctuation
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