Jung Gustavo S, Duarte Joel Fernando Sanabria, de Aragão Afonso H, Vosgerau Ronaldo Pereira, Ramina Ricardo
Department of Neurological Surgery, Skull Base Division.
Department of Neurological Surgery, Post-Graduate Program; and.
Neurosurg Focus Video. 2021 Oct 1;5(2):V9. doi: 10.3171/2021.7.FOCVID2182. eCollection 2021 Oct.
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 large VS, T3b according to the Hannover classification, through the retrosigmoid-transmeatal approach. The video can be found here: https://stream.cadmore.media/r10.3171/2021.7.FOCVID2182.
面神经（FN）的走行在听神经瘤（VSs）患者中已得到广泛研究。面神经走行于肿瘤包膜背侧的情况占比不到3%。基于扩散张量成像（DTI）的纤维束追踪有助于术前识别面神经。在手术过程中，面神经背侧位置会增加损伤风险。作者展示了在通过乙状窦后 - 经迷路入路切除根据汉诺威分类为T3b的大型听神经瘤时，识别和保留背侧移位面神经的细微差别和技巧。视频可在此处找到：https://stream.cadmore.media/r10.3171/2021.7.FOCVID2182 。
