Conversion of Intra-Uterine Pregnancy into Abdominal Pregnancy Due to Ruptured Uterus: Preoperative Sonographic and MRI Diagnosis

Primary abdominal pregnancy is a rare form of ectopic pregnancy. Secondary abdominal pregnancy after rupture of the uterus is extremely uncommon. We present a case of uterine rupture at 21 weeks of gestation with an intact extra-uterine abdominal amniotic sac and fetal demise, diagnosed preoperatively by sonography and MR. The fetus was delivered at emergency laparotomy and the uterine tear was repaired.