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Cochlear Implantation With Sporadic Inner Ear Schwannomas: Outcomes in 106 Patients From an International
John P Marinelli1, Torsten Rahne2, James R Dornhoffer1
1Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota, U.S.A.
Summary
Most patients with inner ear schwannoma achieved open-set speech perception after ipsilateral cochlear implantation. Outcomes remained similar even with incomplete tumor resection in complex cases.
Area of Science:
- Neuroscience
- Otolaryngology
- Audiology
Background:
- Sporadic inner ear schwannomas can impact hearing and balance.
- Cochlear implantation is a potential treatment option for hearing loss in these patients.
Purpose of the Study:
- To evaluate speech perception outcomes in patients with inner ear schwannoma who received ipsilateral cochlear implantation.
Main Methods:
- Retrospective multi-institutional cohort study of 106 patients.
- Assessed speech perception using monosyllabic testing and open-set speech perception.
- Tumor management included observation, stereotactic radiosurgery, or microsurgery.
Main Results:
- 95% of patients achieved open-set speech perception.
- Median monosyllabic speech perception was 72% and median AzBio in quiet was 75%.
- Microsurgery was performed in 86% of patients, often simultaneously with cochlear implantation.
Conclusions:
- Ipsilateral cochlear implantation is effective for achieving open-set speech perception in most patients with inner ear schwannoma.
- Speech perception outcomes are comparable between low-complexity and high-complexity tumors, even with incomplete resection in the latter.
