关于脑瘤的假定位体证,过去已有许多报告。本文就后颅凹占位性病变的假定侧征的发生率及发生机理进行讨论。典型病例报告: 患者23岁,女性,主诉为头痛、噁心、呕吐、右侧耳鸣、步行轻度向右偏斜。检查:双侧视乳头充血,右侧颜面感觉异常(三叉神经第一支知觉迟钝,第2、3支知觉过敏),右侧听力轻度下降,步 There have been many reports in the past on the assumption of a brain tumor. This article discusses the prevalence and mechanism of the postocclusal lesions. Typical case reports: The patient was 23 years old and she was complaining of headache, nausea, vomiting, right tinnitus, and slight rightward deviation of the walk. Examination: Bilateral papillary hyperemia, paraesthesia of the right face (the first branch of the trigeminal nerve is dull, the second and third branch of consciousness are allergic), and the right hearing is slightly decreased.