乙状窦及乳突导血管严重变异一例赵永宏乙状窦位置变异，以前移或后移多见，耳后皮下自然裸露罕见，作者曾遇１例乙状窦及乳突导血管形态和位置严重变异，现报告如下。患者，男，３５岁。因右侧原发性三叉神经痛（Ⅲ支）于１９９１年１０月３１日入院。术前劳氏位乳突片报... A case of sigmoid sinus and mastoid blood vessels leading to serious variation Zhao Yonghong Local variations of the sigmoid sinus, more common in the anterior or posterior pathology, rare natural skin exposed after the ear, the author has encountered a case of sigmoid sinus and papillary lead to severe vascular morphology and location Variation, are as follows. Patient, male, 35 years old. Due to the right side of the primary trigeminal neuralgia (Ⅲ) was admitted on October 31, 1991. Preoperative Listeria mastoid reported ...