Carcinoid TumorAdenocarcinomaMalignant Carcinoid SyndromeCarcinoid Heart DiseaseIleal NeoplasmsAppendiceal NeoplasmsBronchial NeoplasmsGastrointestinal NeoplasmsIntestinal NeoplasmsNeuroendocrine TumorsTumor Markers, BiologicalHydroxyindoleacetic AcidChromograninsOctreotideChromogranin ACell Line, TumorLung NeoplasmsDuodenal NeoplasmsACTH Syndrome, EctopicPancreatic NeoplasmsTumor BurdenTumor Necrosis Factor-alphaStomach NeoplasmsThymus NeoplasmsImmunohistochemistryNeoplasm MetastasisLiver NeoplasmsCommon Bile Duct NeoplasmsCarcinoma, NeuroendocrineNeoplasms, ExperimentalNeoplasms, Multiple PrimaryAmpulla of VaterParaneoplastic Endocrine SyndromesGenes, Tumor SuppressorWilms TumorColonic NeoplasmsTumor Suppressor Protein p53Tomography, X-Ray ComputedJejunal NeoplasmsProctoscopyNeoplasm StagingMammary Neoplasms, ExperimentalEndocrine Gland NeoplasmsTreatment OutcomeIndium RadioisotopesEsophageal NeoplasmsSomatostatinCell ProliferationEnterochromaffin CellsRectal NeoplasmsRetrospective StudiesTumor Suppressor ProteinsAdenocarcinoma, MucinousPrognosisReceptors, SomatostatinTime FactorsImmunoenzyme Techniques3-IodobenzylguanidineAppendixRNA, MessengerBrain NeoplasmsDNA, NeoplasmGastrinsTumor MicroenvironmentCushing SyndromeDigestive System NeoplasmsDuodenoscopyLymphatic MetastasisAdenocarcinoma, PapillaryEar NeoplasmsPolypsCarcinoma, Pancreatic DuctalTransplantation, HeterologousReverse Transcriptase Polymerase Chain ReactionNeovascularization, PathologicNeoplasm ProteinsCarcinoma, Squamous CellParaganglioma, Extra-AdrenalDisease ProgressionAntigens, NeoplasmPeripheral NervesAdenocarcinoma, Bronchiolo-AlveolarAdenomaMutationBiopsyKidney NeoplasmsSurvival RateNeoplasm Recurrence, LocalGene Expression Regulation, NeoplasticAntibodies, MonoclonalSynaptophysinCarcinoma, Small CellGlomus TumorCell DivisionMice, Inbred BALB CAppendectomyBarrett EsophagusSignal TransductionPhosphopyruvate HydrataseXenograft Model Antitumor Assays