Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralSarcoma, EwingMedulloblastomaCerebellar NeoplasmsSupratentorial NeoplasmsBrain NeoplasmsRNA-Binding Protein EWSProto-Oncogene Protein c-fli-1Neuroectodermal Tumor, MelanoticPinealomaEpendymomaSpinal Cord NeoplasmsChromosomes, Human, Pair 22Sarcoma, Small CellRhabdoid TumorBone NeoplasmsCentral Nervous System NeoplasmsOrbital NeoplasmsThoracic NeoplasmsTumor Markers, BiologicalNeuroblastomaIfosfamideAstrocytomaOncogene Proteins, FusionFatal OutcomeImmunohistochemistryParaparesisNeoplasms, Germ Cell and EmbryonalThoracic WallVincristineTomography, X-Ray ComputedPrimitive StreakTeratomaChromosomes, Human, Pair 17Neural PlateChromosomes, Human, Pair 11EtoposideAbdominal NeoplasmsTranslocation, GeneticCranial IrradiationCombined Modality TherapyPineal GlandMagnetic Resonance ImagingSynaptophysinNeurofilament ProteinsLomustineCyclophosphamideCell DifferentiationRhabdomyosarcomaThiotepaSoft Tissue NeoplasmsIn Situ Hybridization, FluorescenceNeoplasms, Nerve TissueDNA, NeoplasmAntineoplastic Combined Chemotherapy ProtocolsTumor Cells, CulturedGliomaCell Line, TumorTumor Necrosis Factor-alphaTumor BurdenTreatment OutcomeReverse Transcriptase Polymerase Chain ReactionPolymerase Chain ReactionTranscription FactorsGene AmplificationEctodermGene RearrangementNeoplasm Recurrence, LocalMolecular Sequence DataBiopsySurvival AnalysisDisease ProgressionChromosome DeletionGene Expression Regulation, NeoplasticDNA-Binding ProteinsChromosome AberrationsPrognosis