经乙状窦后切除侵入小管内的前庭雪旺氏细胞瘤，须切除内听道后壁，才能暴露小管内的肿瘤和m、w颅神经，但由于受到内听道基底部后方迷路的限制，在行前庭雪旺氏细胞瘤手术时有损伤半规管或前庭之可能，造成术后听力损失的危险，而且肿瘤不易完整切除而导致复发。该作者自1994 Resection of the sigmoid sinus invasion of the Vestibular Vesicular Vesicular cell tumor, the resection of the posterior wall of the auditory canal in order to expose the tubules of the tumor and m, w cranial nerve, but due to the rear of the basal ganglia obstruction is limited , In the process of vestibular Schwannoma surgery may damage the semicircular canal or vestibular possible, resulting in the risk of hearing loss, and the tumor is not easy to complete resection and lead to recurrence. The author since 1994