Antineoplastic Combined Chemotherapy Protocols/administration & dosage; Brain Neoplasms/drug therapy; Neoplasm Recurrence, Local/drug therapy; Sarcoma, Ewing/drug therapy; Administration, Oral; Adolescent; Adult; Anti-Bacterial Agents/administration & dosage; Anti-Bacterial Agents/adverse effects; Antibodies, Monoclonal, Humanized/administration & dosage; Antibodies, Monoclonal, Humanized/adverse effects; Antineoplastic Combined Chemotherapy Protocols/adverse effects; Bevacizumab; Brain Neoplasms/pathology; Camptothecin/administration & dosage; Camptothecin/adverse effects; Camptothecin/analogs & derivatives; Cefixime/administration & dosage; Cefixime/adverse effects; Child; Child, Preschool; Dacarbazine/administration & dosage; Dacarbazine/adverse effects; Dacarbazine/analogs & derivatives; Female; Humans; Infant; Irinotecan; Male; Neoplasm Recurrence, Local/pathology; Pilot Projects; Sarcoma, Ewing/pathology; Temozolomide; Vincristine/administration & dosage; Vincristine/adverse effects

bevacizumab; ewing's sarcoma; neuroblastoma; sarcoma; targeted therapy