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Year : 2011  |  Volume : 17  |  Issue : 1  |  Page : 17-19

New findings in the semicircular canal dehiscence syndrome

Department of Otolaryngology, Illinois Eye and Ear Infirmary, University of Illinois, Chicago, USA

Correspondence Address:
James E Song
1535 W Cortez #2R, Chicago, IL, 60642
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0971-7749.85790

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We describe a young patient with conductive hearing loss (CHL) associated with a posterior semicircular canal dehiscence (PCD) next to a large jugular bulb. Vestibular evoked myogenic potentials (VEMPs), audiogram, and computed tomography (CT) confirmed the diagnosis. The contralateral ear also showed lowered VEMP thresholds and PCD on CT, but no CHL. Increased vigilance is warranted in the evaluation of CHL in patients with uninfected, normal-appearing ears. PCD as a cause of CHL is just beginning to surface in the otologic literature. This case, along with two other recent case series, demonstrates the need for CT imaging in cases of atypical CHL.

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