患者 女,12岁。头疼、呕吐并右侧肢体麻木、无力1个月,症状渐进性加重,于1991年8月20日住院。住院时查体,神志清楚,语言无障碍,定向力正常。双侧眼底水肿,视乳头边界消失。右侧肢体:痛觉减退,肌力Ⅳ级,病理反射阳性。余无阳性体征,各项辅助检查正常范围。头颅CT示:左顶叶内侧面实质内椭圆形囊性肿物,体积5cm×5cm×4.5cm,壁完整光滑,内侧壁与大脑镰并联,囊内为均匀一致低 Female patient, 12 years old. Headache, vomiting and numbness on the right limb, weakness 1 month, progressive increase in symptoms, in August 20, 1991 hospitalization. Physical examination during hospitalization, conscious, language barrier-free, orientation normal. Bilateral fundus edema, optic disc disappeared. Right limb: pain relief, muscle strength Ⅳ, pathological reflex positive. I no positive signs, the auxiliary examination of the normal range. Head CT showed: the medial parietal left oval cystic mass, the volume of 5cm × 5cm × 4.5cm, the wall is complete and smooth, the medial wall and brain falx parallel, intracapsular uniform low