Twenty-five patients with advanced or recurrent endometrial carcinoma no longer amenable to control with surgery, radiotherapy, hormonal therapy, or higher-priority chemotherapy were treated with cisplatin 50 mg/m2 intravenously every 3 weeks. Only one objective response, a partial response, was observed among the 25 patients (4%). Twenty patients (80%) exhibited stable disease for more than 1 month, while four patients (16%) progressed less than 1 month after initiating chemotherapy. Adverse effects included leukopenia (28%), thrombocytopenia (40%), nausea and vomiting (74%), and azotemia (37%). Only one patient experienced life-threatening toxicity. Cisplatin thus appears tolerable but only minimally active when given at the dose and schedule tested to patients with endometrial carcinoma who have previously demonstrated progression of disease on chemotherapy with known activity.