“…We reviewed published articles on uterine malformations complicated by endometrial cancer in PubMed from January 1, 1990 to June 30, 2021, and screened the articles on double uterine malformations. We found only 18 cases of uterine didelphys complicated by malignant tumors, including 15 cases of EC, 2 cases of carcinosarcoma, and 1 case of sarcoma [9,11–27] . The incidence of bilateral uterine involvement was even lower, with only 3 cases reported in the literature, including 1 case of sarcoma.…”