后颅窝蛛网膜囊肿１例国防大学第二门诊部儿科（北京复兴路，１００８５６）赵雅琴患儿男，９岁，以发作性头晕伴呕吐９个月，加重３个月并伴双手抽搐入院。患儿９个月前无明显诱因出现头晕，伴恶心、呕吐每日１～２次。无视物旋转感，不伴抽搐。几个月前症状复发，呕吐每... 1 case of posterior fossa arachnoid cyst Pediatric Department of the Second Outpatient Department of National Defense University (Beijing Fuxing Road, 100856) Zhao Yaqin Children, male, aged 9 years old with episodes of dizziness and vomiting for 9 months, exacerbated for 3 months and admitted with both hands and convulsions. Children 9 months ago no obvious incentive to dizziness, nausea, vomiting 1 or 2 times a day. Ignore the sense of rotation, not convulsions. A few months ago, the symptoms of recurrence, vomiting each ...