Neuroectodermal Tumors, PrimitiveNeuroectodermal Tumors, Primitive, PeripheralNeuroectodermal TumorsSarcoma, EwingSarcoma, Small CellProto-Oncogene Protein c-fli-1RNA-Binding Protein EWSMedulloblastomaBone NeoplasmsCerebellar NeoplasmsSupratentorial NeoplasmsChromosomes, Human, Pair 22Neuroectodermal Tumor, MelanoticBrain NeoplasmsPinealomaEpendymomaSpinal Cord NeoplasmsRhabdoid TumorCentral Nervous System NeoplasmsThoracic NeoplasmsOrbital NeoplasmsIfosfamideOncogene Proteins, FusionParaparesisNeuroblastomaFatal OutcomeThoracic WallVincristineNeoplasms, Germ Cell and EmbryonalAstrocytomaImmunohistochemistryChromosomes, Human, Pair 11Abdominal NeoplasmsTomography, X-Ray ComputedTumor Markers, BiologicalChromosomes, Human, Pair 17Translocation, GeneticEtoposideTeratomaPineal GlandCranial IrradiationNeurofilament ProteinsLomustineCombined Modality TherapyMagnetic Resonance ImagingCyclophosphamideThiotepaRhabdomyosarcoma