Microsurgical Gross Total Resection of an Intracanalicular-Cisternal (Koos-4) Vestibular Schwannoma via a Retrosigmoid Approach with Intraoperative Endoscopic Assistance.
case_report · Level V
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- Record sourced from PubMed, PMID 34864191.
- Also identified by DOI 10.1016/j.wneu.2021.11.110.
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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).<sup>1</sup> A retrosigmoid approach assisted with a microinspection tool was chosen.<sup>2-5</sup> 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.
Medical subject headings
- Ear, Inner
- Neuroma, Acoustic