Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralSarcoma, EwingMedulloblastomaNeuroectodermal Tumor, MelanoticCerebellar NeoplasmsSupratentorial NeoplasmsBrain NeoplasmsRNA-Binding Protein EWSProto-Oncogene Protein c-fli-1PinealomaEpendymomaChromosomes, Human, Pair 22Spinal Cord NeoplasmsSarcoma, Small CellRhabdoid TumorBone NeoplasmsCentral Nervous System NeoplasmsThoracic NeoplasmsNeuroblastomaOrbital NeoplasmsNeoplasms, Germ Cell and EmbryonalIfosfamideOncogene Proteins, FusionParaparesisVincristineFatal OutcomeAstrocytomaTumor Markers, BiologicalThoracic WallChromosomes, Human, Pair 11ImmunohistochemistryTomography, X-Ray ComputedTranslocation, GeneticAbdominal NeoplasmsChromosomes, Human, Pair 17TeratomaEtoposidePineal GlandCranial IrradiationMaxillary NeoplasmsNeurofilament ProteinsLomustineCombined Modality TherapyMagnetic Resonance ImagingCyclophosphamideRhabdomyosarcomaThiotepaTumor Cells, CulturedSoft Tissue NeoplasmsIn Situ Hybridization, FluorescenceAntineoplastic Combined Chemotherapy ProtocolsDNA, NeoplasmGliomaNeural PlateGene RearrangementTreatment OutcomeGene AmplificationPolymerase Chain ReactionSynaptophysinNeoplasm Recurrence, LocalReverse Transcriptase Polymerase Chain ReactionTranscription Factors