“…[9][10][11] Despite an improvement in overall survival (S) with multiagent intensive chemotherapy, there is a significant incidence of serious morbidity, including grade III/IV mucositis (40%-70%), systemic infection (60%-80%), myelosuppression (80%-100%), prolonged hospitalization (median 10-14 days during each induction cycle), and a toxic death rate of 1%-2% in remission with potential long-term cardiac and gonadal toxicities and secondary malignancies. 4,5,7,8 Reduction therapy with cyclophosphamide, Oncovin (vincristine) and prednisone (COP), induction therapy with cyclophosphamide, Oncovin (vincristine), prednisone, Adriamycin (doxorubicin), and methotrexate (COPADM), and intensification with cytarabine (high dose and continuous infusion) plus etoposide (CYVE 12 ) (Lymphoma Malignancy B [LMB] 86 and 89 group C therapy) was originally introduced by Patte et al and the Société Française d'Oncologie Pédiatrique (SFOP) for advanced (BM with or without CNS) childhood B-NHL and subsequently investigated by Cairo et al in the Children's Cancer Group (CCG) and by Atra et al for the United Kingdom Children's Cancer Study Group (UKCCSG). 4,13,14 However, in view of the high morbidity of this therapy, the exact intensity that is required for optimal results is still unclear.…”