65 consecutive children over one year of age presenting with neuroblastoma stage IV were unselectively treated with an induction regimen alternating Cis-Platinum/VM 26 and Cyclophosphamide/Adriamycin/Vincristin. After primary surgery two to four months post diagnosis, consolidation consisted of continuous Vincristin, high dose Melphalan and fractionated total body irradiation, followed by bone marrow transplantation (autologous except for 3 allogeneic). Of the 49 children transplanted up to evaluation date, 31 were in partial remission (PR) and 18 in "very good partial remission" (VGPR) or complete remission (CR) at the time of transplantation. The toxic mortality was 20% (14% early, 6% late), the relapse rate 29% and the progressive disease rate 6%. The event-free survival from graft (events being relapse, progression or death) was 33% after a median of 17 months (range: 2-45) without a significant difference between a status at transplantation of PR versus VGPR/CR. The overall actuarial progression-free survival of the complete group of children with neuroblastoma stage IV was 24% after 27 months, including 10 patients who died or relapsed before massive therapy as well as 6 children still in induction. This result must be compared with 6% survival in a similar group diagnosed at the same institutions and treated with conventional chemotherapy before the onset of this trial.