Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralSupratentorial NeoplasmsMedulloblastomaSarcoma, EwingCerebellar NeoplasmsNeuroectodermal Tumor, MelanoticBrain NeoplasmsRNA-Binding Protein EWSProto-Oncogene Protein c-fli-1EpendymomaPinealomaSpinal Cord NeoplasmsChromosomes, Human, Pair 22Sarcoma, Small CellRhabdoid TumorBone NeoplasmsCentral Nervous System NeoplasmsThoracic NeoplasmsAstrocytomaOrbital NeoplasmsIfosfamideTomography, X-Ray ComputedVincristineOncogene Proteins, FusionNeuroblastomaParaparesisFatal OutcomeNeoplasms, Germ Cell and EmbryonalThoracic WallImmunohistochemistryMagnetic Resonance ImagingAbdominal NeoplasmsTumor Markers, BiologicalChromosomes, Human, Pair 11Cranial IrradiationChromosomes, Human, Pair 17Translocation, GeneticTeratomaEtoposideLomustinePineal GlandCombined Modality TherapyNeurofilament ProteinsGliomaCyclophosphamideThiotepaSoft Tissue NeoplasmsRhabdomyosarcomaAntineoplastic Combined Chemotherapy ProtocolsIn Situ Hybridization, FluorescenceTreatment OutcomeDNA, NeoplasmTumor Cells, CulturedCraniotomyGene RearrangementMaxillary NeoplasmsPrognosisNeoplasm Recurrence, LocalGene AmplificationPolymerase Chain Reaction