Carcinoid TumorMalignant Carcinoid SyndromeCarcinoid Heart DiseaseIleal NeoplasmsBronchial NeoplasmsAppendiceal NeoplasmsGastrointestinal NeoplasmsHydroxyindoleacetic AcidIntestinal NeoplasmsChromograninsOctreotideNeuroendocrine TumorsChromogranin ALiver NeoplasmsACTH Syndrome, EctopicDuodenal NeoplasmsLiver DiseasesThymus NeoplasmsTumor Markers, BiologicalLiverLiver TransplantationParaneoplastic Endocrine SyndromesProctoscopyCarcinoma, NeuroendocrineCommon Bile Duct NeoplasmsLiver CirrhosisEnterochromaffin CellsLung Neoplasms3-IodobenzylguanidineSomatostatinEndocrine Gland NeoplasmsReceptors, SomatostatinAmpulla of VaterIndium RadioisotopesCell Line, TumorAppendixJejunal NeoplasmsCushing SyndromeTumor BurdenTomography, X-Ray ComputedTumor Necrosis Factor-alphaGastrinsDuodenoscopyMicrosomes, LiverLiver RegenerationStomach NeoplasmsImmunohistochemistryNeoplasm MetastasisFatty LiverParaganglioma, Extra-AdrenalNeoplasms, Multiple PrimaryPolypsEar NeoplasmsAppendectomyDigestive System NeoplasmsFlushingPancreatic NeoplasmsSynaptophysinEnterochromaffin-like CellsPhosphopyruvate HydrataseAdenocarcinomaRectal NeoplasmsRetrospective StudiesTreatment OutcomeIodobenzenesMultiple Endocrine Neoplasia Type 1SerotoninApudomaMeckel DiverticulumAdenoma, Islet CellWilms TumorTime FactorsMuridaeNeoplasms, ExperimentalGlomus TumorPentetic Acid