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斜坡和脑干腹侧面位于后颅窝的中线区域,是颅内最难接近的结构之一。各种不同的传统开颅显微外科入路,如岩前切除术、经耳蜗入路、乙状窦后入路和远外侧入路,在提供了到达此区域有限路径的同时均存在着明显的缺陷〔1-3〕。这些缺陷包括需要广泛去除颅底结构,到达深部中线处神经血管结构需要牵拉脑组织,所提供的中线结构的显露非常有限〔1-3〕。扩大的内镜下经鼻入路在过去的20年间得到了迅猛发展,克服了传统入路中的许多不
The slopes and the ventral aspect of the brainstem lie in the midline region of the posterior fossa, making it one of the most difficult structures in the skull. A variety of traditional craniotomy microsurgery approaches, such as petrophysical resection, cochlear approach, sigmoid sinus posterior approach, and far lateral approach, provide significant pathways to reach this region at the same time Defect [1-3]. These defects include the need to extensively remove the base of the skull and reach the deep midline where the neurovascular structures need to pull the brain tissue and provide a very limited exposure of the midline structures [1-3]. The enlarged endoscopic nasal approach has seen rapid growth over the past two decades, overcoming many of the traditional approaches