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Repair of posterior semicircular canal dehiscence from a high jugular bulb
Samuel P Gubbels1, Qi Zhang, Paul W Lenkowski
1Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave, Clinical Science Center-K4, Madison, WI 53792-3284, USA.
Objectives:
We describe the clinical evaluation and operative management of posterior semicircular canal dehiscence caused by a high jugular bulb.
Methods:
We performed a retrospective case report.
Results:
The patient had clinical and audiometric findings consistent with semicircular canal dehiscence and imaging findings that demonstrated erosion of the posterior semicircular canal by a high jugular bulb. Resurfacing of the eroded canal provided resolution of the vestibular symptoms without damage to the inner ear.
Conclusions:
Dehiscence of the posterior semicircular canal can cause clinical and audiometric findings similar to those of superior semicircular canal dehiscence syndrome. Resurfacing of the area of dehiscence can successfully relieve the vestibular symptoms. In the case of dehiscence of the posterior canal from a high jugular bulb, resurfacing may offer advantages over canal plugging for definitive management.
