Florid Diffuse Peritoneal Deciduosis Mimicking Peritoneal Carcinomatosis: A Case Report

Deciduosis is defined as the presence of decidual tissue in an ectopic site and must be distinguished from the more alarming conditions that it can simulate. Ectopic decidua is observed usually in the uterus, cervix, fallopian tube, and the ovaries. Peritoneal location is rare. It usually involutes within four to six weeks postpartum. We present this case because of its similar clinical and radiological findings with malignancy.