Endoscope-assisted partial cochlectomy for intracochlear schwannoma with simultaneous cochlear implantation: a case report

Andrew K. Ma*, Nirmal Patel

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)


    Introduction:Intralabyrinthine schwannomas are a small subset of vestibular schwannomas which originate within the labyrinthine structures. Management typically consists of watch-and-wait strategies given that surgical intervention will sacrifice hearing. Endoscopic resection of primary intracochlear schwannoma with simultaneous cochlear implantation for a patient with progressive hearing loss and debilitating tinnitus is described.Patient:A 56-year-old male presenting with asymmetric left sensorineural hearing loss (SNHL) was diagnosed with intracochlear schwannoma on MRI.Intervention:Surgery was indicated due to tumor growth on serial imaging, worsening SNHL, and severe tinnitus. Partial cochlectomy was performed via transcanal endoscopic approach. Cochlear implantation via mastoidectomy and posterior tympanotomy was simultaneously performed with a CI512 Contour Advanced implant (Cochlear, Sydney, Australia).Main Outcome Measures:Post partial cochlectomy speech performance.Results:Preoperative audiometry showed left profound SNHL with 20% speech recognition score despite maximal amplification. Speech perception testing 5 months postoperatively demonstrated good unilateral discrimination when testing the implanted ear alone (BKB sentences 66%, CUNY sentences 79%), open-set comprehension, and excellent binaural performance.Conclusion:The endoscope offers an additional viable approach to the otic capsule for the removal of intracochlear schwannoma and good audiologic outcomes can be achieved with simultaneous cochlear implantation even after partial cochlectomy.

    Original languageEnglish
    Pages (from-to)334-338
    Number of pages5
    JournalOtology and Neurotology
    Issue number3
    Publication statusPublished - 1 Mar 2020


    • Cochlear implant
    • Cochlectomy
    • Endoscopic ear
    • Hearing rehabilitation
    • Intracochlear schwannoma


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