Vertigo and ear discomfort caused by a bone defect in os temporalis
Møller, M.; Jørgensen, G.M.
Ugeskrift for Laeger 175(45): 2725-2727
2013
ISSN/ISBN: 1603-6824 PMID: 24629237 Document Number: 670278
Superior semicircular canal dehiscence is a clinical condition where the bone tissue overlying the superior semicircular canal is absent. The symptoms can be nonspecific and include vertigo, oscillopsia and conductive hearing loss. An audiogram will reveal an air-bone-gap in the lower frequencies in an otherwise healthy ear. Diagnosis is confirmed by performing muscular evoked myogenic potentials examination and temporal bone computed tomography. A case of right side superior semicircular canal dehiscence in a 52-year-old woman and the diagnostic course is described.