Nine of 19 patients (47%) with widespread or recurrent endometrial carcinoma responded to chemotherapy with cisplatin, doxorubicin, and cyclophosphamide. Two complete clinical responses and seven partial responses were achieved. A "second-look" laparotomy documented the complete response in one patient. The addition of cisplatin to doxorubicin and cyclophosphamide increased toxicity without increasing the antitumor activity previously reported for the two-drug combination. Performance status had a marked influence on response, while sites of metastases, amount of residual disease, and histologic grade did not affect the response rate. A schema for the treatment of patients with endometrial carcinoma with progestins and/or cytotoxic chemotherapy is suggested.