1·Conclusion: the imaging anatomic classification of posterior ethmoid sinus has the instructive significance for basicranial surgery and the surgical approach via saddle area.
结论：后筛窦影像解部分型分度对前颅底外科及蝶鞍区手术具有实际的指导意义。
2·Methods: the approach of palatal, cervical or lateral basicranial according to the site of the tumor was adopted.
方法：根据肿瘤的部位不同而分别采用：经腭、颈侧、侧颅底三种手术径路。
3·Objective To evaluate the diagnosis and treatment of basicranial parapharyngeal tumor.
目的探讨侧颅底咽旁间隙肿瘤的诊断和治疗。