患者 男性,21岁。主诉自幼行走不稳,言语不清伴进行性头痛,进食呛咳3个月入院。 检查 左眼视力0.4,右眼1.0,眼底视盘水肿,眼球呈水平震颤;左侧Ⅵ、Ⅶ、Ⅷ、Ⅸ颅神经损害;左侧跟膝胫及指鼻试验过限,Holmes—Stewart回向反射异常。头颅CT扫描示后颅窝及左侧桥小脑角巨大肿瘤占位,伴梗阻性脑积水,股动脉插管选择性全脑血管造影示左侧小脑上动 Patient male, 21 years old. Prone to walking instability from early childhood, speechless with progressive headache, coughing 3 months admitted to hospital. Left eye visual acuity 0.4, right eye 1.0, fundus optic disc edema, the eye was tremor level; left Ⅵ, Ⅶ, Ⅷ, Ⅸ cranial nerve damage; left with knee tibia and nasal test limits, Holmes-Stewart retroreflective abnormal. Head CT scan shows the posterior fossa and left cerebellopontal horn huge tumor space, with obstructive hydrocephalus, femoral artery catheter selective whole cerebrovascular angiography showed the left upper cerebellar artery