Overall survival of patients with non-Hodgkin's lymphoma receiving three different treatment regimens (3-year estimates of survival).4 CHOP – cyclophosphamide, doxorubicin, vincristine, prednisone; m-BACOD – methotre-xate with leucovorin rescue, bleomycin, doxorubicin, cyclo-phosphamide, vincristine, and dexamethasone; ProMACECytaBOM – prednisone, doxorubicin, cyclophosphamide, etoposide, followed by cytarabine, bleomycin, vincristine, methotrexate with leucovorin rescue; MACOP-B – methotrexate with leucovorin rescue, doxorubicin, cyclophosphamide, vincristine, prednisone, and bleomycin. Reprinted with permission from Fisher RI et al. Comparison of a standard regimen (CHOP) with three intensive chemotherapy regimens for advanced non-Hodgkin's lymphoma. N Engl J Med 1993;328: 1002-6. ©Massachusetts Medical Society.