患者男,11岁。因头痛,颈部扭斜1年,左半身活动不便半年,于1979年7月25日入院。患者于1年前发现颈部向左不自主歪斜,有时感头晕、头痛,以枕部为主。无恶心、呕吐。半年前出现左上肢活动受限,双下肢无力,走路不稳,偶有向一侧倾倒现象。发病以来,逐渐感到说话不清,音调忽 Patient male, 11 years old. Due to headaches, neck 1 year skew, left half-activity inconvenience six months, on July 25, 1979 admission. One year ago, the patient found the neck involuntarily skewed to the left, sometimes feel dizzy, headache, occipital-based. No nausea, vomiting. Six months ago, left upper limb movement was limited, weakness of both lower extremities, walking instability, occasional dumping to one side. Since the onset, I gradually feel vague, tone suddenly