PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Karnofsky 80-100% Life expectancy: At least 14 weeks Hematopoietic: WBC at least 3,5000/mm3 Platelet count at least 150,000/mm3 Hepatic: Bilirubin no greater than 1.0 mg/dL Renal: Creatinine no greater than 1.5 mg/dL Cardiovascular: No clinically significant cardiac disease (New York Heart Association class III/IV heart disease) Other: No positive human antimouse antibody titer No serious infection requiring treatment with antibiotics No other serious illness Not pregnant or nursing Effective contraception required of all fertile patients