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KMID : 0361020080510080738
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Korean Journal of Otolaryngology - Head and Neck Surgery
2008 Volume.51 No. 8 p.738 ~ p.741
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A Case of Superior Canal Dehiscence Syndrome as a cause of Step-Synchronous Tinnitus
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Park Ga-Hyun
Park Hong-Ju
Moon Won-Jin
Lee Yeo-Jin
Kwak Hi-Boong
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Abstract
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The superior canal dehiscence syndrome (SCDS) is a rare disorder caused by the dehiscence of the temporal bone overlying the superior semicircular canal. It has become apparent that SCDS can lead to a variety of clinical manifestations, vestibular and/or auditory, in contrast to the typical symptoms, as initially described. We recently examined a 54-year-old woman with unilateral stepsynchronous tinnitus without any vestibular symptoms. Tinnitus is a quite unremarkable finding among variable symptoms of the syndrome; however, it can be one of the clues to identify SCDS when it is accompanied by low-frequency conductive hearing loss. Therefore, in diagnosing SCDS, attention must be also paid to those patients with nonspecific complaints, for example, stepsynchronous tinnitus.
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KEYWORD
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Superior canal dehiscence syndrome, Tinnitus, Conductive hearing loss
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