Retrosigmoid Approach for Resection of Medium-Sized Vestibular Schwannoma.

This video was aimed to describe the relevant anatomy and key surgical steps of retrosigmoid approach for gross total resection of a medium-sized vestibular schwannoma (VS).  The procedure is described in a surgical instructional video.  The surgery took place at a tertiary skull base referral center.  Patient is a 63-year-old woman who reported with nonserviceable hearing (Pure Tone Average 60 dB Hearing level, Word Recognition Score 45%), occasional tinnitus, and a VS in the left cerebellopontine angle (CPA), extending into internal auditory canal (IAC), measuring 1.7 cm parallel to the petrous temporal bone.  The VS was resected by retrosigmoid approach.  The surgery results gross total resection of the VS with postoperative House-Brackmann grade 1 facial nerve function and no postoperative complications.  The retrosigmoid approach is a good strategy to remove VS involving the CPA and the IAC. The link to the video can be found at: https://youtu.be/B6K_UkrKitg .