1　病历摘要患儿女 ,11岁。因“眼睑及双下肢水肿 1月余 ,乏力、恶心、呕吐 3天”于1998年 12月 2 9日入本院。患儿 1998年 11月初无明显诱因出现行走乏力 ,家人发现其眼睑及双下肢水肿 ,按之凹陷 ,晨轻暮重 ,无发热、恶心、呕吐及腹泻 ,尿、粪正常。患儿水肿逐日加重 ,遂于 11 1 medical records with children, 11 years old. Due to “eyelid and lower extremity edema in more than a month, fatigue, nausea, vomiting three days” in December 29, 1998 into our hospital. Early November 1998 children with no obvious incentive to walking weak, the family found that the eyelids and edema of both lower extremities, according to depression, morning light and heavy, no fever, nausea, vomiting and diarrhea, urine, normal feces. Children with edema increased day by day, then at 11