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


METHODS
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.


CONCLUSIONS
This case illustrates that posterior semicircular canal dehiscence can be surgically managed by resurfacing the defect site via a transmastoid approach.
Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
H W
HW
Lim
H J
HJ
Park
J H
JH
Jung
J W
JW
Chung
D000368:Aged; D004240:Diverticulum; D006801:Humans; D007601:Jugular Veins; D007759:Labyrinth Diseases / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D009759:Nystagmus, Pathologic / Q000209:etiology / Q000601:surgery; D013506:Otologic Surgical Procedures / Q000379:methods*; D012665:Semicircular Canals / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery*; D013577:Syndrome; D014012:Tinnitus / Q000209:etiology; D016896:Treatment Outcome; D014717:Vertigo / Q000209:etiology / Q000601:surgery; D058585:Vestibular Evoked Myogenic Potentials / Q000502:physiology