PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: See Disease Characteristics No prior total dose of doxorubicin or daunorubicin of 450 mg/m2 or greater unless an endomyocardial biopsy shows less than grade 2 drug effect Endocrine therapy: Not specified Radiotherapy: No prior pelvic irradiation Surgery: Not specified Other: No concurrent nitroglycerin or antiarrhythmic drugs