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Sound-induced vertigo due to bone dehiscence of the lateral semicircular canal

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Abstract

Dehiscence of the lateral semicircular canal (LSCD) has been reported much but mainly in association with cholesteatoma and canal wall down mastoidectomy, while idiopathic LSCD was rarely reported. Bassim reported one case with lateral semicircular canal dehiscence, but presented no vestibular or auditory symptoms. The patient in this study complained significant sound-induced vertigo and autophony in his right ear. The axis of nystagmus was orthogonal to the lateral semicircular canal, and no torsional or vertical motions were observed, so pathology of the lateral semicircular canal was preferentially considered. Benign paroxysmal positional vertigo was excluded since vertigo attacks had no relation to the change of head position. The dehiscence of the right lateral semicircular canal was then confirmed through the high-resolution temporal bone computer tomography scan and the reconstructed images. The cause of the LSCD is poorly understood, since no history of head trauma, otological infection or surgery was documented.

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Acknowledgments

This study was supported by Science and Technology Ministry of China “Tenth Five” Tackling Key Project Fund (No: 2004BA702B04, CFD); Educational Ministry of China (No: NCET-06-0369, CFD); National Natural Science Foundation (No: 30772398, CFD).

Conflict of interest statement

There is no financial relationship with the organization that sponsored the research.

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Authors and Affiliations

  1. Department of Otology and Skull Base Surgery, Eye Ear Nose and Throat Hospital, Fudan University, No. 83, Fenyang Rd, Shanghai, 200031, China

    Yi-Bo Zhang & Chun-Fu Dai

  2. Department of Radiology, Eye Ear Nose and Throat Hospital, Fudan University, No. 83, Fenyang Rd, Shanghai, 200031, China

    Yan Sha

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  1. Yi-Bo Zhang
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  2. Chun-Fu Dai
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  3. Yan Sha
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Correspondence to Chun-Fu Dai.

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Zhang, YB., Dai, CF. & Sha, Y. Sound-induced vertigo due to bone dehiscence of the lateral semicircular canal. Eur Arch Otorhinolaryngol 267, 1319–1321 (2010). https://doi.org/10.1007/s00405-010-1239-6

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  • DOI: https://doi.org/10.1007/s00405-010-1239-6

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