Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralNervous System NeoplasmsMedulloblastomaSarcoma, EwingCentral Nervous System NeoplasmsBrain NeoplasmsCerebellar NeoplasmsSupratentorial NeoplasmsNeuroectodermal Tumor, MelanoticPeripheral Nervous SystemEpendymomaSpinal Cord NeoplasmsRNA-Binding Protein EWSProto-Oncogene Protein c-fli-1AstrocytomaPinealomaMeningiomaChromosomes, Human, Pair 22Sarcoma, Small CellRhabdoid TumorGliomaBone NeoplasmsNeuroblastomaNeurofibromatosis 2ImmunohistochemistryThoracic NeoplasmsOrbital NeoplasmsIfosfamideTumor Markers, BiologicalNeurilemmomaFatal OutcomeOncogene Proteins, FusionParaparesisVincristineNeoplasms, Germ Cell and EmbryonalMeningeal NeoplasmsThoracic WallCentral Nervous SystemMagnetic Resonance ImagingTomography, X-Ray ComputedPeripheral NervesChromosomes, Human, Pair 11Neurofilament ProteinsAbdominal NeoplasmsChromosomes, Human, Pair 17TeratomaEtoposideTranslocation, GeneticNeurofibromin 2Infant, NewbornNervous SystemPineal GlandCranial IrradiationPaternal ExposureCombined Modality TherapyNeurofibromatosis 1GlioblastomaLomustineBrain Stem NeoplasmsPeripheral Nervous System DiseasesCyclophosphamideNeoplasmsCell Line, TumorThiotepaRhabdomyosarcomaPolymerase Chain ReactionNeoplasms, Nerve TissueSoft Tissue NeoplasmsIn Situ Hybridization, FluorescenceAntineoplastic Combined Chemotherapy ProtocolsTumor Cells, CulturedDNA, NeoplasmTreatment OutcomeMolecular Sequence DataReverse Transcriptase Polymerase Chain ReactionTranscription FactorsPeripheral Nervous System NeoplasmsRetrospective StudiesGene RearrangementSchwann CellsTime FactorsGene AmplificationMaxillary NeoplasmsSciatic NerveBrainNeoplasm Recurrence, LocalTumor Necrosis Factor-alphaCell DifferentiationFollow-Up StudiesDisease ProgressionBiopsyTumor BurdenSurvival AnalysisChromosome DeletionPrognosisDNA-Binding Proteins