Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralNeuroectodermal Tumor, MelanoticSarcoma, EwingMedulloblastomaMagnetic Resonance ImagingCerebellar NeoplasmsSupratentorial NeoplasmsBrain NeoplasmsProto-Oncogene Protein c-fli-1RNA-Binding Protein EWSSensitivity and SpecificityRetrospective StudiesPinealomaTreatment OutcomeChromosomes, Human, Pair 22EpendymomaSpinal Cord NeoplasmsSarcoma, Small CellBone NeoplasmsNeuroblastomaMaxillary NeoplasmsRhabdoid TumorTumor Markers, BiologicalNeoplasms, Germ Cell and EmbryonalThoracic NeoplasmsCentral Nervous System NeoplasmsImmunohistochemistryNeural PlateChromosomes, Human, Pair 11AstrocytomaOncogene Proteins, FusionTomography, X-Ray ComputedOrbital NeoplasmsFatal OutcomeVincristineIfosfamideCell Line, TumorTranslocation, GeneticGanglioneuromaParaparesisSkull NeoplasmsThoracic WallTeratomaNeoplasms, Nerve TissuePeripheral Nervous System NeoplasmsTumor BurdenTumor Necrosis Factor-alphaAntigens, NeoplasmEtoposidePineal GlandCombined Modality TherapyChromosomes, Human, Pair 17RhabdomyosarcomaAbdominal NeoplasmsGliomaNeurofilament ProteinsTumor Cells, CulturedDNA, NeoplasmRetinoblastomaThoracic Surgical ProceduresCranial IrradiationCyclophosphamideSoft Tissue NeoplasmsGangliosidesPhosphopyruvate HydrataseIn Situ Hybridization, FluorescenceLomustineSynaptophysinGenes, mycReverse Transcriptase Polymerase Chain ReactionAntineoplastic Combined Chemotherapy ProtocolsPolymerase Chain ReactionRNA, MessengerCell Transformation, NeoplasticCell DivisionNeoplasm Recurrence, LocalNeoplasm ProteinsTranscription FactorsBiopsyImmunoenzyme TechniquesThiotepaEctodermWilms TumorCell DifferentiationBiopsy, NeedleDisease ProgressionAntibodies, MonoclonalMolecular Sequence DataGene AmplificationGene Expression Regulation, NeoplasticBase SequenceNeoplasms, ExperimentalGenes, Tumor SuppressorPrognosisTime FactorsSurvival AnalysisNeoplasmsDNA-Binding Proteins