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Surgical treatment of posterior semicircular canal dehiscence syndrome caused by jugular diverticulum

Published online by Cambridge University Press:  17 July 2012

H W Lim ,
H J Park ,
J H Jung  and
J W Chung
H W Lim
Affiliation:
Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
H J Park
Affiliation:
Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
J H Jung
Affiliation:
Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
J W Chung*
Affiliation:
Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
*
Address for correspondence: Dr Jong Woo Chung, Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnap 2-dong, Songpa-gu, Seoul 138–736, South Korea Fax: +82 2 489 2773 E-mail: [email protected]
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Abstract

Objective:

We report a rare case of posterior semicircular canal dehiscence caused by a jugular diverticulum, and we describe its surgical treatment using a dehiscence resurfacing manoeuvre.

Method:

The clinical findings, surgical procedure and outcomes are presented.

Results:

A 66-year-old man presented with disequilibrium, sound-induced vertigo, a reduced ocular vestibular evoked myogenic potential threshold, and pressure-induced vertical and torsional nystagmus. Computed tomography revealed a right posterior semicircular canal dehiscence caused by a diverticulum of the jugular bulb. The defect in the posterior semicircular canal was localised and resurfaced with bone paté, temporalis muscle fascia and conchal cartilage, under direct visualisation. Post-operatively, the patient's symptoms disappeared and his ocular vestibular evoked myogenic potential threshold normalised.

Conclusion:

This case illustrates that posterior semicircular canal dehiscence can be surgically managed by resurfacing the defect site via a transmastoid approach.

Keywords

Semicircular CanalsEarInnerJugular VeinDehiscenceSurgery
Type
Clinical Records
Information
The Journal of Laryngology & Otology , Volume 126 , Issue 9 , September 2012 , pp. 928 - 931
Copyright
Copyright © JLO (1984) Limited 2012

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