J Neurol Surg B Skull Base 2022; 83(S 01): S1-S270
DOI: 10.1055/s-0042-1743985
Presentation Abstracts
Poster Presentations

Superior Semicircular Canal Dehiscence Revision Surgery Outcomes: A Single Institution's Experience

Farinaz Ghodrati
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Khashayar Mozaffari
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Anjali Pradhan
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Edwin Ng
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Kevin Ding
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Shivam Rana
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Courtney Duong
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Roan N. Anderson
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Adam Enomoto
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
John P. Sheppard
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Matthew Z. Sun
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
H. Westley Phillips
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Quinton Gopen
2   Department of Head and Neck Surgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
,
Isaac Yang
1   Department of Neurosurgery, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California, United States
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    Objective: Superior semicircular canal dehiscence (SSCD) is an abnormality of the otic capsule which normally overlies the superior semicircular canal. Surgical management is indicated in patients with persistent and debilitating symptoms. Given the complexity of the disease, there are patients who experience less favorable surgical outcomes and require revision surgery. The purpose of this study was to report to the rate of postoperative symptomatic improvement in patients who required revision surgery.

    Methods: A retrospective analysis of patients undergoing SSCD surgical repair at a single institution was performed. Information on patient demographics, primary and secondary surgical approaches, surgical outcomes, and follow-up length was collected.

    Results: A total of 17 patients underwent 20 revision surgeries. There were eleven (65%) females and six (35%) males. Mean age of the cohorts was 50 years (range: 30–68 years), and mean follow-up length was 6.8 months (range 0.1–31.1 months). Cerebrospinal fluid (CSF) leak was noted in 67% of cases. The greatest postoperative symptomatic resolution was reported in oscillopsia (100%), headache (100%), and internal sound amplification (71%), while the least postoperative symptomatic resolution was reported in tinnitus (42%), aural fullness (40%), and dizziness (29%).

    Conclusion: Revision surgery can provide symptomatic improvement in select SSCD patients; however, patients should be cautioned about the possibility of less favorable outcomes than in index surgery. Revision surgeries are associated with a considerably higher rate of perioperative CSF leak.


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    No conflict of interest has been declared by the author(s).

    Publication History

    Article published online:
    15 February 2022

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