PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Life expectancy: Not specified Hematopoietic: WBC at least 3,500/mm3 Absolute neutrophil count at least 1,500/mm3 Platelet count at least 100,000/mm3 No history of coagulopathy Hepatic: Bilirubin no greater than upper limit of normal (ULN) SGOT or SGPT no greater than 2.0 times ULN Alkaline phosphatase no greater than 5.0 times ULN Renal: Creatinine no greater than 2.0 times ULN Cardiovascular: No myocardial infarction within past 6 months Pulmonary: No prior pulmonary embolus Neurologic: No prior cerebrovascular accident No symptomatic peripheral neuropathy greater than grade 1 No significant neurologic or psychiatric disorder (psychotic disorder, dementia, or seizure) Other: No other prior malignancy within past 5 years, except: Excised or curatively irradiated nonmelanomatous skin cancer No other serious illness or medical condition No active infection