宫内诊断即产前诊断，是指在胎儿出生前，通过各种手段对胎儿进行先天性缺陷或遗传性疾病的诊断。
Fetal in utero diagnosis, that is, prenatal diagnosis, means diagnosis of those abnormal babies with congenital defect or inheritance disease before their delivery.
可能会出现在出生前的产前肾积水的输尿管异常扩大或尿路感染的患儿vur。
Children with VUR may present before birth as prenatal hydronephrosis (an abnormal widening of the ureter) or with a urinary tract infection.
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