Dorsal displacement of the facial nerve in vestibular schwannoma surgery

Gustavo S. Jung, Joel Fernando Sanabria Duarte, Afonso H. de Aragão, Ronaldo Pereira Vosgerau, Ricardo Ramina
2021 Neurosurgical Focus: Video  
The course of the facial nerve (FN) has been extensively investigated in patients with vestibular schwannomas (VSs). FN running dorsally to the tumor capsule accounts for less than 3% of the cases. Diffusion tensor imaging (DTI)–based fiber tracking helps to preoperatively identify the FN. During surgery, a higher risk of injury is associated with the dorsal location of the FN. The authors demonstrate the nuances and tricks to identify and preserve a dorsal displaced FN during resection of a
more » ... ge VS, T3b according to the Hannover classification, through the retrosigmoid-transmeatal approach. The video can be found here:
doi:10.3171/2021.7.focvid2182 fatcat:53l4lpdtzvejdg6vbzp6jtpmae