[病例] 女,14岁。头痛、呕吐40天,双手持物及步态不稳10天。因上述症状加重3天,偶有两眼直视,于1984年6月2日入院。病程中无发热、抽搐及意识障碍等。既往健康。体检:体温36.5℃、脉搏90次/min、呼吸20次/min,节律规整,神志清、双瞳孔等大同圆、对光反应良好,无 [Case] ​​Female, 14 years old. Headache, vomiting 40 days, hands and gait instability for 10 days. Due to the above symptoms aggravate 3 days, occasionally two eyes look straight, on June 2, 1984 admission. No fever in the course of the disease, convulsions and disturbance of consciousness. Past health. Physical examination: body temperature 36.5 ℃, pulse 90 beats / min, breathing 20 beats / min, regular rhythm, clear consciousness, double pupil and other Datong circle, good response to light, no