Facial Nerve Schwannoma Resection and Nerve Anastomosis in 1 Stage by Translabyrinthine Approach.

Facial nerve schwannomas (FNS) are rare benign tumors that can develop in any segment of the facial nerve. Patients often experience facial palsy and hearing loss after FNS removal or even before surgery. Double-stage treatment is usually necessary for tumor resection and reconstruction of facial nerve function.Video 1 describes the translabyrinthine approach for resection of the middle-posterior cranial fossa dumbbell FNS and end-to-side hypoglossal-facial nerve anastomosis in 1 stage. The case presented is of a 28-year-old female patient who suffered from right-side hearing loss for 1.5 years, right facial paralysis for 2 months (House-Brackmann grade V), and a right middle-posterior fossa dumbbell FNS extending from the right cerebellopontine angle area and internal auditory canal. Gross total resection of the tumor and hypoglossal-facial nerve end-to-side anastomosis were performed during the same procedure. Postoperative facial nerve function was House-Brackmann grade III at the 6-month follow-up. The patient experienced no postoperative complications. This case demonstrates the advantages of the translabyrinthine approach for middle-posterior fossa dumbbell FNS. This approach helps in achieving tumor resection and nerve anastomosis in 1 stage by avoiding multiple surgical interventions for patients with hearing loss and impaired facial nerve function. The patient consented to surgery and the publication of her images.