Neuroectodermal Tumors, PrimitiveNeuroectodermal Tumors, Primitive, PeripheralNeuroectodermal TumorsDesmoplastic Small Round Cell TumorSarcoma, EwingAbdominal NeoplasmsSarcoma, Small CellRNA-Binding Protein EWSMedulloblastomaProto-Oncogene Protein c-fli-1Cerebellar NeoplasmsSupratentorial NeoplasmsChromosomes, Human, Pair 22Neuroectodermal Tumor, MelanoticBrain NeoplasmsOncogene Proteins, FusionRhabdomyosarcoma, EmbryonalRhabdomyosarcomaPinealomaBone NeoplasmsWT1 ProteinsRhabdomyosarcoma, AlveolarTranslocation, GeneticCarcinoma, Small CellEpendymomaChimerin ProteinsPeritoneal NeoplasmsSpinal Cord NeoplasmsSarcoma, Clear CellChromosomes, Human, Pair 11ImmunohistochemistryRhabdoid TumorTumor Markers, BiologicalNeoplasms, Germ Cell and EmbryonalNeuroblastomaCentral Nervous System NeoplasmsFatal OutcomeThoracic NeoplasmsLiposarcoma, MyxoidHeterogeneous-Nuclear RibonucleoproteinsIfosfamideSoft Tissue NeoplasmsOrbital NeoplasmsReverse Transcriptase Polymerase Chain ReactionGranulosa Cell TumorParaparesisVincristineThoracic WallTeratomaAstrocytomaTomography, X-Ray ComputedGiant Cell Tumor of BoneVenereal Tumors, VeterinaryEtoposideChromosomes, Human, Pair 17Giant Cell TumorsPineal GlandHistiocytoma, Benign FibrousCombined Modality TherapyCranial IrradiationMastocytomaHistiocytic SarcomaMagnetic Resonance ImagingDNA-Binding ProteinsLomustineNeurofilament ProteinsSarcomaGranular Cell TumorCyclophosphamideTesticular NeoplasmsIn Situ Hybridization, FluorescenceAntineoplastic Combined Chemotherapy ProtocolsTranscription FactorsDNA, NeoplasmThiotepaTreatment OutcomeTumor Cells, CulturedMaxillary NeoplasmsMolecular Sequence DataSertoli Cell TumorBase SequenceDog DiseasesLeydig Cell TumorGliomaPolymerase Chain ReactionGene RearrangementNeoplasm Recurrence, LocalGene AmplificationCell Line, TumorGerminomaPrognosisBiopsy