%0 Case Reports
%T Images in abnormal placenta: a rare case of "blood bag" formation in placenta membranacea.
%A Li S
%A Meng X
%A Wang J
%J Arch Gynecol Obstet
%V 309
%N 5
%D 2024 May 3
%M 38308731
%F 2.493
%R 10.1007/s00404-023-07365-2
%X Placenta membranacea is an uncommon placental anomaly. Here, we present the case of a 30-year-old primiparous woman admitted for thickened placenta and reduced amniotic fluid. A follow-up ultrasound, performed after 48 h, revealed that the placental parenchyma was thin and not adequately visualized, enclosing a substantial volume of flowing blood (150 mm), with an amniotic fluid index of 18 mm. An emergency cesarean section was promptly performed. Following fetal delivery, a substantial accumulation of dark red blood within the fetal membranes created a "blood bag", estimated at approximately 3000 ml. This observation aligned with the ultrasound findings, and both placental morphology and pathological results substantiated the diagnosis of placenta membranacea.