胎盘植入是指胎盘绒毛因子宫蜕膜发育不良等原因而植入子宫肌层,可造成产前或产后大出血、子宫穿孔、继发感染,危及孕母及胎儿的生命。发生率报道不一,国外O’Brien JM等报道为1/540～1/93000[1];近年来由于宫腔操作增多,国内郑丽漩等[2]报道为1/15686～1/333。正常情况下,胎盘 Placenta accreta is the cause of placental villi due to uterine decidua dysplasia and other reasons implanted in the myometrium, can cause prenatal or postpartum hemorrhage, uterine perforation, secondary infection, endanger the lives of pregnant and fetal. The incidence of different coverage, foreign reports such as O’Brien JM 1/540 ~ 1/93000 [1]; in recent years due to increased intrauterine operation, the domestic Zheng Limin et al [2] reported 1/15686 ~ 1/333 . Under normal circumstances, the placenta