The mucous membrane lining of uterus is known as decidua once it is implanted with a fertilized egg. A decidual cast forms under the influence of hormones while preparing uterus for implantation and it can shed by taking the shape of uterus. It has well known association with ectopic pregnancy. Also it can occur with incomplete abortion as mentioned in this case report. Other conditions are use of progesterone, standard dose of oral contraceptive pills. Our patient 25 year unbooked gravida 3 parity 2 with 12 week period of gestation presented to emergency department with incomplete abortion with excessive bleeding and anaemia. She was shifted for surgical evacuation in which she passed decidual cast, a very rare finding. The histopathology report suggest retained product of conception with chorionic villi.
Abortion, Anaemia, Decidual cast