Abdominal pregnancy: magnetic resonance identification with ultrasonographic follow-up of placental involution

Abdominal pregnancy is a rare event and preoperative diagnosis may be difficult. Recently, sonographic examination and magnetic resonance imaging have proved helpful in the preoperative diagnosis in a patient who presented with advanced abdominal pregnancy after tubal sterilization. As well, ultrasound was of benefit in the follow-up of placental involution after delivery.