OBJECTIVES: I. Improve the complete remission rate and progression-free survival and reduce the relapse rate of patients with poor-risk neuroblastoma using intensive multimodality therapy: cyclophosphamide/doxorubicin/vincristine and cisplatin/etoposide, external-beam radiotherapy, and surgery (when feasible), followed by radioimmunotherapy with iodine I 131 labeled monoclonal antibody 3F8 followed by autologous bone marrow transplant and immunotherapy with unlabeled 3F8. II. Identify biologic and clinical prognostic factors that may guide future modifications in treatment approaches for this malignancy.