PATIENT CHARACTERISTICS: Age: Any age Performance status: ECOG 0-3 Life expectancy: At least 6 weeks Hematopoietic: WBC at least 1500/mm3 Platelet count at least 50,000/mm3 Hepatic: Bilirubin no greater than 3.0 mg/dL Renal: Creatinine no greater than 3.0 mg/dL Other: May be HIV positive Immunocompetent (HIV-seronegative) NHL patients must be suitable candidates for bleomycin chemotherapy Active infections undergoing drug treatment allowed Negative head CT/MRI scan