PRIOR CONCURRENT THERAPY: Biologic therapy: At least 4 weeks since prior immunotherapy No concurrent colony stimulating factor except for secondary prophylaxis in case of infection and severe neutropenia No concurrent immunotherapy Chemotherapy: No prior chemotherapy for advanced disease, including intracavitary chemotherapy At least 1 year since prior neoadjuvant or adjuvant chemotherapy No concurrent chemotherapy Endocrine therapy: See Disease Characteristics No concurrent hormonal agents (except corticosteroids for antiemetic prophylaxis) Radiotherapy: Prior radiotherapy should not include all target lesions for evaluation At least 4 weeks since prior radiotherapy Concurrent palliative radiotherapy allowed if indicator lesion is outside of radiation field Surgery: Not specified