Sex Cord-Gonadal Stromal TumorsGastrointestinal Stromal TumorsSertoli Cell TumorGranulosa Cell TumorStromal CellsThecomaProto-Oncogene Proteins c-kitSpinal CordCalbindin 2Gastrointestinal NeoplasmsOvarian NeoplasmsBenzamidesFibrous Dysplasia, MonostoticPiperazinesUterine NeoplasmsNeprilysinPyrimidinesSpinal Cord InjuriesAdolescent BehaviorReceptor, Platelet-Derived Growth Factor alphaS100 Calcium Binding Protein GMART-1 AntigenVimentinAdolescent PsychologySex FactorsSex CharacteristicsImmunohistochemistryTumor Markers, BiologicalSarcoma, Endometrial StromalUmbilical CordEndometrial Stromal TumorsMesenchymomaAntineoplastic AgentsNephroma, MesoblasticCell Line, TumorTumor BurdenSexAdolescent DevelopmentMesenchymal Stromal CellsDuodenal NeoplasmsMitotic IndexAdolescent Health ServicesNeoplasms, Connective TissuePyrrolesMutationNeoplasms, Multiple PrimaryTumor Necrosis Factor-alphaTreatment OutcomeJejunal NeoplasmsEpithelioid CellsTomography, X-Ray ComputedLeiomyosarcomaStomach NeoplasmsIleal NeoplasmsTime FactorsAntigens, CD34Cell ProliferationCorneal StromaIntestinal NeoplasmsBone Marrow CellsSpinal Cord DiseasesFetal BloodPrognosisIndolesCells, CulturedRetrospective StudiesSpinal Cord CompressionProtein Kinase InhibitorsTumor MicroenvironmentSarcomaAge FactorsSex ChromosomesNeoplasms, Complex and MixedSpinal Cord NeoplasmsRNA, MessengerChemokine CXCL12Adolescent MedicineLeiomyomaDNA Mutational AnalysisCarcinoid TumorCarney ComplexSpermatic CordDisease ProgressionNeoplasm MetastasisReverse Transcriptase Polymerase Chain ReactionRisk FactorsFollow-Up StudiesWilms TumorSignal TransductionNeurofibromatosis 1Sex Determination ProcessesNeoplasm ProteinsMice, Inbred C57BLCell DifferentiationAdenocarcinomaEndometriumNeoplasms, ExperimentalUnsafe SexGenes, Tumor SuppressorCoculture Techniques