Microsurgical Gross Total Resection of an Intracanalicular-Cisternal (Koos-4) Vestibular Schwannoma via a Retrosigmoid Approach with Intraoperative Endoscopic Assistance

Juan M. Revuelta Barbero, Edoardo Porto, Eduardo J. Medina, David P. Bray, Tomas Garzon-Muvdi, C. Arturo Solares, Gustavo Pradilla

Research output: Contribution to journalArticlepeer-review

Abstract

We present the case of a 23-year-old female with a history of progressive hearing loss in the left ear, dizziness, and vertigo. Magnetic resonance imaging demonstrated a left mass extending from the internal auditory canal into the cerebellopontine angle (Koos-4).1 A retrosigmoid approach assisted with a microinspection tool was chosen.2-5 Microsurgical near total resection was achieved. The patient presented a postoperative facial deficit (House-Brackman grade 2 postoperative), with complete resolution after 2 months. Video 1 highlights the critical steps of the retrosigmoid approach and the benefit of using the microinspection tool for vestibular schwannoma resection.

Original languageEnglish (US)
Pages (from-to)225
Number of pages1
JournalWorld neurosurgery
Volume158
DOIs
StatePublished - Feb 2022
Externally publishedYes

Keywords

  • Posterior fossa
  • Translabyrinthine approach
  • Vestibular schwannoma

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology

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