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目的：总结小儿外部性脑积水的共性，并对其发病机制及诊断、治疗、预后的有关问题进行探讨。方法：对６２例外部性脑积水患儿的临床及ＣＴ表现、治疗方法、预后等情况给予综合分析。结果：认为外部性脑积水患儿无特异性临床表现，诊断主要是依赖脑ＣＴ的特殊变化，治疗主要是对原发病的治疗，预后一般良好。结论：外部性脑积水不是独立的疾病，而是婴儿早期多种病因导致的脑发育异常。临床应注意与脑萎缩、脑发育不良相鉴别并要定期随访
OBJECTIVE: To summarize the common features of pediatric external hydrocephalus and to discuss its pathogenesis, diagnosis, treatment and prognosis. Methods: A total of 62 cases of hydrocephalus in children with clinical manifestations, treatment, prognosis and other given a comprehensive analysis. Results: There was no specific clinical manifestation in children with external hydrocephalus. The diagnosis mainly depends on the special changes of brain CT. The treatment is mainly for the treatment of primary disease, and the prognosis is generally good. CONCLUSIONS: External hydrocephalus is not an independent disease, but an abnormal development of the brain due to multiple etiologies in early infancy. Clinical should pay attention to brain atrophy, differential brain dysplasia and regular follow-up