Gastrointestinal Stromal TumorsNeoplasm TransplantationStromal CellsProto-Oncogene Proteins c-kitGastrointestinal NeoplasmsBenzamidesSex Cord-Gonadal Stromal TumorsPiperazinesPyrimidinesReceptor, Platelet-Derived Growth Factor alphaInjectionsTumor Markers, BiologicalImmunohistochemistryEndometrial Stromal TumorsMesenchymomaAntineoplastic AgentsTumor BurdenSarcoma, Endometrial StromalNephroma, MesoblasticCell Line, TumorDuodenal NeoplasmsMitotic IndexTumor Necrosis Factor-alphaNeoplasms, Connective TissuePyrrolesJejunal NeoplasmsNeoplasms, Multiple PrimaryEpithelioid CellsLeiomyosarcomaMutationStomach NeoplasmsTomography, X-Ray ComputedIleal NeoplasmsIntestinal NeoplasmsTreatment OutcomeIndolesProtein Kinase InhibitorsCell ProliferationCarcinoid TumorSarcomaNeoplasms, Complex and MixedNeoplasms, ExperimentalCarney ComplexAntigens, CD34Injections, IntravenousLeiomyomaWilms TumorDNA Mutational AnalysisNeoplasm MetastasisPrognosisTime FactorsNeurofibromatosis 1Injections, IntramuscularInjections, IntralesionalGenes, Tumor SuppressorTumor MicroenvironmentAdenocarcinomaDigestive System Surgical ProceduresNeoplasm ProteinsGranulosa Cell TumorGastrectomyDisease ProgressionMesenchymal Stromal CellsTumor Suppressor Protein p53RNA, MessengerMice, Inbred C57BLRetrospective StudiesLiver NeoplasmsReverse Transcriptase Polymerase Chain ReactionSignal TransductionOvarian NeoplasmsMice, Inbred BALB CS100 ProteinsDisease-Free SurvivalKidney NeoplasmsGastroscopyPeritoneal NeoplasmsDNA, NeoplasmNeurilemmomaNeuroendocrine TumorsOmentumBrain NeoplasmsXenograft Model Antitumor AssaysNeovascularization, PathologicTumor Suppressor ProteinsNeoplasm StagingMammary Neoplasms, ExperimentalDisease Models, AnimalTransplantation, HeterologousPositron-Emission TomographyCells, CulturedGene Expression Regulation, NeoplasticNeoplasmsInjections, SubcutaneousMice, NudeLaparotomyExonsKi-67 AntigenInterstitial Cells of CajalInjections, Intra-Articular