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Hearing restoration through nonmastoidectomy endoscope-assisted infrapromontorial vestibular schwannoma removal and simultaneous cochlear implantation
J Korean Skull Base Soc 2021;16(2):104-109
Published online September 30, 2021
© 2021 Korean Skull Base Society.

Jungghi Kim, In Seok Moon

Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
Correspondence to: In Seok Moon
주소 : Department of Otorhinolaryngology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
Tel : +82-2-2228-3606
Fax : +82-2-393-0580
E-mail : ismoonmd@yuhs.ac
Received August 21, 2021; Accepted September 10, 2021.
Abstract
Various approaches have been applied to surgery of vestibular schwannomas (VSs) and preservation of hearing, when possible, has been one of important goals of VS surgery. In recent years, several attempts have been made to restore damaged hearing with implants, going beyond simple preservation of hearing, in addition to tumor removal. We present a case of a 40-year-old male who had a 7-mm intracanalicular VS with profound ipsilateral hearing loss. The patient underwent nonmastoidectomy endoscopic transcanal infrapromontorial tumor removal with concurrent cochlear implantation on the ipsilateral side, without any complication during or after surgery. Postoperative pure-tone audiometry showed notable improvement to 21 dB HL. With this approach, the infrapromontorial corridor provided space to remove the tumor and most of the normal cochlear structure was preserved, allowing stable insertion of a cochlear implant electrode. This case suggests that nonmastoidectomy infrapromontorial approach and concurrent cochlear implantation can achieve both minimally invasive tumor removal and restoration of hearing simultaneously.
Keywords : Vestibular schwannoma, Cochlear implantation, Minimally invasive surgery


September 2021, 16 (2)
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