一般认为 ,妊娠合并轻度肾积水是生理性的 ,发生率高达 80 %～ 90 % [1,2 ] ,多无症状或仅有轻微腹痛 ,分娩后可自行缓解。少数患者发生上尿路的病理性扩张 ,出现腹部钝痛、肾功能受损 ,即所谓的症状性肾积水。妊娠合并巨大肾积水可造成不可逆性肾功能损害 ,后果严重 ,但临床上 Generally believed that pregnancy with mild hydronephrosis is physiologically, the incidence as high as 80% to 90% [1,2], asymptomatic or only mild abdominal pain, spontaneous relief after delivery. A small number of patients with the pathological upper urinary tract expansion, there dull abdominal pain, impaired renal function, the so-called symptomatic hydronephrosis. Pregnancy complicated with massive hydronephrosis can cause irreversible renal dysfunction, the consequences of serious, but clinically