PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Life expectancy: At least 12 weeks Hematopoietic: Absolute granulocyte count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater than upper limit of normal (ULN) AST no greater than 2.5 times ULN Renal: Creatinine no greater than ULN Cardiovascular: If history of cardiac disease, cardiac ejection function greater than 50% No clinically significant cardiac symptomatology Pulmonary: If history of symptomatic pulmonary disease, FEV1, FVC, and TLC greater than 60% predicted and DLCO greater than 50% predicted No clinically significant pulmonary symptomatology Other: Not pregnant or nursing Negative pregnancy test Fertile patients must use effective contraception No other concurrent serious disease