Res Vestib Sci.  2013 Dec;12(4):132-135.

Superior Semicircular Canal Dehiscence Syndrome Presenting with Sudden Deafness and Vertigo after Trauma

Affiliations
  • 1Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea. jwkoo99@snu.ac.kr
  • 2Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
  • 3Research Center for Sensory Organs, Medical Research Center, Seoul National University, Seoul, Korea.

Abstract

Superior semicircular canal dehiscence syndrome (SCDS) is characterized by cochleovestibular hyper-responsiveness symptoms including sound- and pressure-evoked vertigo and oscillopsia, autophony, hyperacusis and ear fullness. The typical audiometric feature of SCDS is known as conductive hearing loss at low frequency. A 43-year-old man presented with unilateral sudden deafness after several events of heading during soccer game. High-resolution temporal bone computed tomography revealed a dehiscence of superior canal encased by superior petrous sinus. We reviewed audio-vestibular findings in this patient and speculated potential pathogenic mechanisms of sudden deafness in SCDS with literature review.

Keyword

Semicircular canals; Deafness; Superior canal dehiscence syndrome; Trauma; Perilymph fistula

MeSH Terms

Adult
Deafness
Ear
Head
Hearing Loss, Conductive
Hearing Loss, Sudden*
Humans
Hyperacusis
Semicircular Canals*
Soccer
Temporal Bone
Vertigo*
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