Tung H, Chen T, Weiss M H
Department of Neurological Surgery, University of Southern California School of Medicine, Los Angeles.
J Neurosurg. 1991 Oct;75(4):638-41. doi: 10.3171/jns.1991.75.4.0638.
Two cases of sixth cranial nerve schwannoma are presented with a review of four other cases from the literature. The clinical spectrum, neuroradiological findings, and surgical outcome of the six cases are discussed. There are two distinct clinical presentations for sixth cranial nerve schwannomas. Type I sixth nerve schwannomas present with sixth nerve palsy and diplopia and arise from the cavernous sinus. In contrast, type II sixth nerve schwannomas have a more severe presentation with obstructive hydrocephalus, raised intracranial pressure, sixth nerve palsy, and diplopia. This type arises along the course of the sixth cranial nerve in the prepontine area. Cavernous sinus involvement in either type may preclude total surgical excision and indicate an increase possibility for recurrence.
本文报告了2例第六颅神经鞘瘤，并回顾了文献中的其他4例病例。讨论了这6例病例的临床特征、神经影像学表现和手术结果。第六颅神经鞘瘤有两种不同的临床表现。I型第六神经鞘瘤表现为第六神经麻痹和复视，起源于海绵窦。相比之下，II型第六神经鞘瘤表现更为严重，伴有梗阻性脑积水、颅内压升高、第六神经麻痹和复视。此型沿脑桥前区的第六颅神经走行发生。两种类型中若有海绵窦受累，可能无法进行手术全切，并提示复发可能性增加。
