Conservative management of abnormally invasive placenta: four case reports.

Prenatal diagnosis of placenta increta and percreta is essential to avoid potentially life-threatening hemorrhage by optimizing peripartal management. Invasive placentation presents significant challenges at cesarean section even for highly skilled surgeons. In the four cases of placenta increta/percreta presented here we tried to avoid hysterectomy by leaving the placenta behind and tried to accelerate regression of placental tissue by administering methotrexate.