PATIENT CHARACTERISTICS: Age: 18 to 60 Performance status: Karnofsky 70-100% Life expectancy: Not specified Hematopoietic: Not specified Hepatic: Bilirubin less than 1.5 times the upper limit of normal (ULN) SGOT or SGPT less than 2.0 times ULN Albumin greater than 2.0 g/dL Renal: Creatinine clearance greater than 60 mL/min Cardiovascular: Ejection fraction greater than 45% by MUGA Pulmonary: If history of smoking or abnormal lung function, Diffusion capacity greater than 50% (corrected) A-a gradient less than 20 Other: No history of hemorrhagic cystitis No second malignancy within the last 5 years except basal cell skin cancer HIV negative No chronic active hepatitis B No hepatitis C No history of Aspergillus infection