Disseminated Neuroblastoma

Supersaturated Calcium Phosphate Rinse in Preventing Oral Mucositis in Young Patients Undergoing Autologous or Donor Stem Cell Transplant

ABT-751 in Treating Children With Neuroblastoma That Has Relapsed or Not Responded to Previous Treatment

Deferasirox for Treating Patients Who Have Undergone Allogeneic Stem Cell Transplant and Have Iron Overload

Activated T Cells Armed With GD2 Bispecific Antibody in Children and Young Adults With Neuroblastoma and Osteosarcoma

Prolonged or Standard Infusion of Cefepime Hydrochloride in Treating Patients With Febrile Neutropenia

Etanercept in Treating Young Patients With Idiopathic Pneumonia Syndrome After Undergoing a Donor Stem Cell Transplant

Ondansetron in Preventing Nausea and Vomiting in Patients Undergoing Stem Cell Transplant

Lithium Carbonate in Treating Patients With Acute Intestinal Graft-Versus-Host-Disease (GVHD) After Donor Stem Cell Transplant

Study of DNA in Blood Samples From Patients With Neuroblastoma

Prognostic Biomarkers in Tumor Tissue Samples From Young Patients With Neuroblastoma

R(+)XK469 in Treating Patients With Advanced Neuroblastoma

Tanespimycin in Treating Young Patients With Recurrent or Refractory Leukemia or Solid Tumors

Pyrazoloacridine and Stem Cell or Bone Marrow Transplantation in Treating Young Patients With High-Risk Neuroblastoma

Ipilimumab After Allogeneic Stem Cell Transplant in Treating Patients With Persistent or Progressive Cancer

Monoclonal Antibody Therapy With Sargramostim and Interleukin-2 in Treating Children With Neuroblastoma

Mechanical Stimulation in Preventing Bone Density Loss in Patients Undergoing Donor Stem Cell Transplant

Internet-Based Program With or Without Telephone-Based Problem-Solving Training in Helping Long-Term Survivors of Hematopoietic Stem Cell Transplant Cope With Late Complications