Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralNeuroectodermal Tumor, MelanoticSarcoma, EwingMedulloblastomaCerebellar NeoplasmsSupratentorial NeoplasmsBrain NeoplasmsProto-Oncogene Protein c-fli-1RNA-Binding Protein EWSPinealomaChromosomes, Human, Pair 22EpendymomaRadiation DosageRadiation, IonizingSpinal Cord NeoplasmsSarcoma, Small CellBone NeoplasmsNeuroblastomaRhabdoid TumorMaxillary NeoplasmsRadiation InjuriesThoracic NeoplasmsTumor Markers, BiologicalNeoplasms, Germ Cell and EmbryonalCentral Nervous System NeoplasmsDose-Response Relationship, RadiationPrimitive StreakRadiation ToleranceImmunohistochemistryNeural PlateOncogene Proteins, FusionTomography, X-Ray ComputedChromosomes, Human, Pair 11AstrocytomaRadiationCombined Modality TherapyOrbital NeoplasmsVincristineCell Line, TumorIfosfamideFatal OutcomeRadiation ProtectionTranslocation, GeneticRadiation MonitoringThoracic WallGanglioneuromaSkull NeoplasmsParaparesisTeratomaCranial IrradiationNeoplasms, Nerve TissueTumor Cells, CulturedTumor BurdenEtoposideGliomaCell DifferentiationMagnetic Resonance ImagingAbdominal NeoplasmsRhabdomyosarcomaTumor Necrosis Factor-alphaPeripheral Nervous System NeoplasmsPineal GlandAntigens, NeoplasmRetinoblastomaChromosomes, Human, Pair 17DNA, NeoplasmNeurofilament ProteinsCell DivisionTreatment OutcomeThoracic Surgical ProceduresCyclophosphamideEctodermAntineoplastic Combined Chemotherapy ProtocolsSoft Tissue NeoplasmsMolecular Sequence DataReverse Transcriptase Polymerase Chain ReactionTranscription FactorsIn Situ Hybridization, FluorescenceLomustineNeoplasm Recurrence, LocalRNA, MessengerPhosphopyruvate HydrataseSynaptophysinGangliosidesGenes, mycPolymerase Chain ReactionTime FactorsBase SequenceRadiation OncologyNeoplasm ProteinsCell Transformation, NeoplasticAntibodies, MonoclonalDNA-Binding ProteinsNeoplasmsWilms TumorThiotepaSurvival AnalysisImmunoenzyme Techniques