Carcinoid TumorMalignant Carcinoid SyndromeCarcinoid Heart DiseaseIleal NeoplasmsColorectal NeoplasmsBronchial NeoplasmsAppendiceal NeoplasmsCell Line, TumorGastrointestinal NeoplasmsNeuroendocrine TumorsTumor Markers, BiologicalIntestinal NeoplasmsHydroxyindoleacetic AcidChromograninsOctreotideChromogranin ATumor BurdenACTH Syndrome, EctopicNeoplasm MetastasisAdenocarcinomaTumor Necrosis Factor-alphaLiver NeoplasmsTumor Cells, CulturedDuodenal NeoplasmsThymus NeoplasmsNeoplasms, ExperimentalAdenomaColonic NeoplasmsImmunohistochemistryLung NeoplasmsRectal NeoplasmsTumor Suppressor Protein p53Genes, Tumor SuppressorWilms TumorParaneoplastic Endocrine SyndromesCell ProliferationCarcinoma, NeuroendocrineNeoplasmsProctoscopyPancreatic NeoplasmsNeoplasm StagingStomach NeoplasmsCommon Bile Duct NeoplasmsDNA, NeoplasmIndium RadioisotopesTomography, X-Ray ComputedNeoplasm ProteinsBrain NeoplasmsTumor Suppressor ProteinsTreatment OutcomeTumor MicroenvironmentMammary Neoplasms, ExperimentalEndocrine Gland NeoplasmsNeoplasms, Multiple PrimaryNeovascularization, PathologicSomatostatinEnterochromaffin CellsPrognosisAmpulla of VaterTransplantation, HeterologousGene Expression Regulation, NeoplasticMice, NudeAntigens, NeoplasmReceptors, SomatostatinRetrospective StudiesXenograft Model Antitumor AssaysAntineoplastic AgentsJejunal NeoplasmsTime FactorsRNA, Messenger3-IodobenzylguanidineCell DivisionCarcinoma, Ehrlich TumorGastrinsLymphatic MetastasisImmunoenzyme TechniquesAntibodies, MonoclonalReverse Transcriptase Polymerase Chain ReactionCushing SyndromeMice, Inbred BALB CAppendixPolypsNeoplasm TransplantationDigestive System NeoplasmsSignal TransductionMutationDisease ProgressionDuodenoscopyParaganglioma, Extra-AdrenalColonoscopyKidney NeoplasmsNeoplasm Recurrence, LocalEar NeoplasmsCell Transformation, NeoplasticFibrosarcomaNeoplastic Cells, CirculatingSurvival RateRectumSurvival AnalysisGlomus Tumor