Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralSarcoma, EwingMedulloblastomaBrain NeoplasmsCerebellar NeoplasmsSupratentorial NeoplasmsNeuroectodermal Tumor, MelanoticRNA-Binding Protein EWSProto-Oncogene Protein c-fli-1EpendymomaPinealomaSpinal Cord NeoplasmsMeningiomaChromosomes, Human, Pair 22AstrocytomaSarcoma, Small CellRhabdoid TumorBone NeoplasmsCentral Nervous System NeoplasmsMeningeal NeoplasmsGliomaThoracic NeoplasmsOrbital NeoplasmsTumor Markers, BiologicalOncogene Proteins, FusionTomography, X-Ray ComputedIfosfamideNeuroblastomaVincristineImmunohistochemistryFatal OutcomeNeoplasms, Nerve TissueMagnetic Resonance ImagingParaparesisNeoplasms, Germ Cell and EmbryonalThoracic WallCombined Modality TherapyChromosomes, Human, Pair 11Abdominal NeoplasmsChromosomes, Human, Pair 17TeratomaTranslocation, GeneticEtoposideCranial IrradiationPineal GlandCyclophosphamideLomustineNeurofilament ProteinsCraniopharyngiomaTumor Cells, CulturedGlioblastomaRhabdomyosarcomaCell Line, TumorIn Situ Hybridization, FluorescenceThiotepaAntineoplastic Combined Chemotherapy ProtocolsSoft Tissue NeoplasmsTreatment OutcomeDNA, NeoplasmPrognosisNeuroendocrine TumorsGene RearrangementPolymerase Chain ReactionGene AmplificationInfant, NewbornSurvival RateMaxillary NeoplasmsGene Expression Regulation, NeoplasticSurvival AnalysisNeoplasm Recurrence, LocalReverse Transcriptase Polymerase Chain ReactionAdenoma, ChromophobeNeurilemmomaRetrospective StudiesTumor Necrosis Factor-alphaTumor BurdenDisease ProgressionChromosome DeletionTranscription FactorsChromosome AberrationsBiopsyNeuroma, Acoustic