Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralNeuroectodermal Tumor, MelanoticSarcoma, EwingMedulloblastomaBiopsyCerebellar NeoplasmsSupratentorial NeoplasmsBrain NeoplasmsProto-Oncogene Protein c-fli-1RNA-Binding Protein EWSPinealomaChromosomes, Human, Pair 22EpendymomaBiopsy, NeedleSpinal Cord NeoplasmsSarcoma, Small CellBone NeoplasmsNeuroblastomaMaxillary NeoplasmsRhabdoid TumorTumor Markers, BiologicalNeoplasms, Germ Cell and EmbryonalThoracic NeoplasmsCentral Nervous System NeoplasmsImmunohistochemistryNeural PlateChromosomes, Human, Pair 11Oncogene Proteins, FusionAstrocytomaOrbital NeoplasmsTomography, X-Ray ComputedFatal OutcomeVincristineIfosfamideCell Line, TumorTranslocation, GeneticGanglioneuromaSkull NeoplasmsParaparesisThoracic WallTeratomaNeoplasms, Nerve TissuePeripheral Nervous System NeoplasmsTumor BurdenCombined Modality TherapyTumor Necrosis Factor-alphaMagnetic Resonance ImagingAntigens, NeoplasmEtoposideAbdominal NeoplasmsPineal GlandRhabdomyosarcomaChromosomes, Human, Pair 17GliomaNeurofilament ProteinsDNA, NeoplasmTumor Cells, CulturedThoracic Surgical ProceduresRetinoblastomaCranial IrradiationCyclophosphamideSoft Tissue NeoplasmsIn Situ Hybridization, FluorescenceGangliosidesTreatment OutcomePhosphopyruvate HydrataseLomustineSynaptophysinGenes, mycReverse Transcriptase Polymerase Chain ReactionPolymerase Chain ReactionAntineoplastic Combined Chemotherapy ProtocolsRNA, MessengerNeoplasm Recurrence, LocalImmunoenzyme TechniquesNeoplasm ProteinsCell DivisionCell Transformation, NeoplasticAntibodies, MonoclonalTranscription FactorsThiotepaWilms TumorEctodermCell DifferentiationGene AmplificationDisease ProgressionGene Expression Regulation, NeoplasticPrognosisMolecular Sequence DataBase SequenceGenes, Tumor SuppressorNeoplasms, ExperimentalSurvival AnalysisDoxorubicinNeoplasmsCarcinoid TumorGene RearrangementTumor Suppressor Protein p53