子宮円索動脈の塞栓を要した胎盤ポリープの1例

抄録

Placental polyp is a rare disease, consisting of an intrauterine polypoid mass occurring from residual trophoblastic tissue after an abortion, a cesarean section, or a vaginal delivery. It occasionally causes hemorrhage requiring massive blood transfusions. Uterine artery embolization (UAE) is one of the treatment options for placental polyp. Generally, uterine arteries are feeding vessels of the placental polyp, but the left round ligament artery (RLA) was a main feeder in the present case. In case of postpartum hemorrhage, the ovarian artery and RLA are frequently seen collaterals that supply the uterus. However, in the placental polyp, such collaterals are rare, and there have been no reports regarding placental polyp treated by embolization of the RLA. We report a patient who underwent preoperative embolization of the left RLA for placental polyp. Therapeutic approaches including the indications for UAE for the placental polyp and hemodynamic changes in the RLA are also discussed.