PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: See Disease Characteristics Prior total dose of doxorubicin or daunorubicin less than 450 mg/m2 unless endometrial biopsy shows less than grade 2 drug effect Endocrine therapy: Not specified Radiotherapy: See Disease Characteristics Surgery: See Disease Characteristics Other: No concurrent nitroglycerin preparations for angina pectoris No concurrent antiarrhythmic drugs for major ventricular dysrrhythmias