Sarcoma, EwingRNA-Binding Protein EWSProto-Oncogene Protein c-fli-1Bone NeoplasmsOncogene Proteins, FusionDelayed DiagnosisNeuroectodermal Tumors, PrimitivePrenatal DiagnosisEarly DiagnosisNeuroectodermal Tumors, Primitive, PeripheralSensitivity and SpecificityDiagnosisRetrospective StudiesSoft Tissue NeoplasmsTomography, X-Ray ComputedDiagnostic ErrorsPrognosisBiopsyCell Line, TumorEpidural NeoplasmsChromosomes, Human, Pair 22Treatment OutcomeIfosfamideTranslocation, GeneticFollow-Up StudiesNursing DiagnosisOsteosarcomaDiagnosis, Computer-AssistedCalmodulin-Binding ProteinsPolymerase Chain ReactionPredictive Value of TestsSarcoma, Small CellNanodiamondsTime FactorsInfant, NewbornRisk FactorsReproducibility of ResultsSarcomaPreimplantation DiagnosisProspective StudiesVincristineKeratin-17Tumor Markers, BiologicalGene Expression Regulation, NeoplasticIncidenceMagnetic Resonance ImagingReverse Transcriptase Polymerase Chain ReactionPregnancyCombined Modality TherapyNeoplasms, Second PrimarySarcoma, SynovialImmunohistochemistryChromosome BreakpointsMusculoskeletal SystemFatal OutcomeBiopsy, NeedleAbdominal NeoplasmsFetal DiseasesSurvival RateNeoplasmsCell Migration Assays, MacrophageCohort StudiesChondrosarcomaReceptor, IGF Type 1RhabdomyosarcomaDoxorubicinEtoposideAge FactorsNeoplasm StagingIn Situ Hybridization, FluorescencePrevalenceAntineoplastic Combined Chemotherapy ProtocolsRegistries