PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: Patients who have previously failed treatment with doxorubicin HCl liposome, vincristine, and dexamethasone (VAD) are allowed if anthracycline therapy has been at least 6 months, and prior anthracycline exposure no greater than 300 mg/m2 No other concurrent chemotherapy Endocrine therapy: Not specified Radiotherapy: Prior radiotherapy allowed Concurrent radiotherapy to control pain or prevent fractures allowed Surgery: Prior surgery allowed if recovered