Development of conductive hearing loss due to posterior semicircular canal dehiscence

Marie Kubota; Kazuhiko Kubo; Tetsuro Yasui; Nozomu Matsumoto; Shizuo Komune

doi:10.1016/j.anl.2014.10.014

Development of conductive hearing loss due to posterior semicircular canal dehiscence

Auris Nasus Larynx. 2015 Jun;42(3):245-8. doi: 10.1016/j.anl.2014.10.014. Epub 2014 Nov 22.

Authors

Marie Kubota¹, Kazuhiko Kubo², Tetsuro Yasui², Nozomu Matsumoto², Shizuo Komune²

Affiliations

¹ Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. Electronic address: [email protected].
² Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.

PMID: 25466358
DOI: 10.1016/j.anl.2014.10.014

Abstract

We herein report a case of posterior semicircular canal dehiscence (SCD) syndrome who had been audiologically followed up for eight years. The patient originally had sensorineural hearing loss. The audiogram had gradually transformed to pure conductive hearing loss. The posterior SCD was identified in CT scan. The reported case showed the possibility to distinguish the mechanism at play underlying the typical conductive hearing loss in SCD patients by tracing the transition of the hearing loss pattern. This information is of much help to predict the hearing outcomes if surgical intervention were chosen for the treatment.

Keywords: Hearing loss; Hearing loss pattern transition; Posterior semicircular canal dehiscence; Surgical indication.

Publication types

Case Reports

MeSH terms

Adolescent
Audiometry, Pure-Tone
Disease Progression
Female
Hearing Loss, Conductive / etiology
Hearing Loss, Conductive / physiopathology*
Hearing Loss, Sensorineural / etiology
Hearing Loss, Sensorineural / physiopathology*
Humans
Labyrinth Diseases / complications
Labyrinth Diseases / physiopathology*
Semicircular Canals / diagnostic imaging*
Tomography, X-Ray Computed
Vestibular Evoked Myogenic Potentials