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Updated: Mar 17, 2026
Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery
Published on: August 4, 2023
Minimally Invasive Surgery for Intracochlear Schwannoma Removal and Simultaneous Cochlear Implantation
Ricardo Ferreira Bento1, Eloisa Maria Mello Santiago Gebrim2, Ana Tereza de Matos Magalhães1
1Department of Otolaryngology, School of Medicine, Universidade de São Paulo, São Paulo, SP, Brazil.
Introduction:
Hearing preservation has not yet been reported in patients undergoing resection of intracochlear schwannomas. This study describes a minimally invasive procedure for intracochlear schwannoma resection with simultaneous cochlear implantation that resulted in good hearing.
Objective:
This study aims to describe a minimally invasive procedure for intracochlear schwannoma resection with simultaneous cochlear implantation.
Data Synthesis:
The technique described in this study was developed for a 55-year-old male with a 20-year history of bilateral progressive hearing loss and tinnitus that had a mass in the left apical turn of the cochlea measuring 0.3 cm. Surgery accessed the apical turn of the cochlea. We performed mastoidectomy and posterior tympanotomy and removed incus and tensor tympani muscle to expose the cochlear apex. The tumor was identified and completely resected. After the cochlea was anatomically preserved, it was implanted with a straight electrode via round window insertion. The histopathological examination confirmed intracochlear schwannoma. Speech perception test revealed 100% speech recognition with closed sentences and the average audiometric threshold (500 to 2000 Hz) was 23 dB.
Conclusion:
Our technique led to rehabilitation of the patient and improved hearing without damaging the intracochlear structure, making it possible to perform CI in the same procedure with good results.
