Results The causes were rupture of cesarean incision,subinvolution of uterus,retained placenta or decidua,endometritis,serious anemia,and postpartum choriocarcinoma in order.

• 结果发病原因依次为子宫切口裂开；子宫复旧不良；胎盘、蜕膜残留；子宫内膜炎；重度贫血；产后绒癌。发生时间以剖宫产术后3周以上占多数(67.；44%25)；部分病例(16