EPOCH Chemotherapy +/- IL-12 for Previously Untreated and EPOCH Plus Rituximab for Previously Treated Patients With AIDS-Associated Lymphoma

* INCLUSION CRITERIA: Aggressive CD20 + NHL confirmed by Pathology, DCS. HIV + serology. All stages (I-IV) of disease. NHL previously treated with up to two chemotherapy regimens and evaluable disease. Age greater than or equal to 18 years. Laboratory test: (Abnormalities are allowed if due to organ involvement by lymphoma). Creatinine less than or equal to 1.7. Bilirubin must be less than 2.0 mg/dl, or total bilirubin less than or equal to 3.7 mg/dl with direct fraction less than or equal to 0.2 mg/dl and indirect fraction of less than or equal 3.5 mg/dl in patients for whom these abnormalities are felt to be due to protease inhibitor therapy. AST and ALT less than or equal to 3 times ULN (AST and ALT less than or equal to 6 times ULN for patients on hyperalimentation for whom these abnormalities are felt to be due to the hyperalimentation). ANC greater than or equal 1000/mm(3). Platelets must be greater than or equal to 75,000/mm(3) (patients with ITP platelets greater than or equal to 30,000/mm(3). Signed informed consent and Durable Power of Attorney. EXCLUSION CRITERIA: Pregnancy or nursing. History of clinical heart failure or symptomatic ischemic heart disease. Serious underlying medical condition or infection other than HIV that would contraindicate EPOCH. Concurrent anti-retroviral therapy during EPOCH therapy. Primary CNS lymphoma.