Carcinoid TumorBronchial NeoplasmsACTH Syndrome, EctopicMalignant Carcinoid SyndromeParaneoplastic Endocrine SyndromesCarcinoid Heart DiseaseIleal NeoplasmsCushing SyndromeAppendiceal NeoplasmsCarcinoma, Adenoid CysticAdrenocorticotropic HormoneGastrointestinal NeoplasmsHydroxyindoleacetic AcidIntestinal NeoplasmsChromograninsOctreotideNeuroendocrine TumorsChromogranin ADuodenal NeoplasmsThymus NeoplasmsTumor Markers, BiologicalProctoscopyCarcinoma, NeuroendocrineCommon Bile Duct NeoplasmsEnterochromaffin CellsLiver Neoplasms3-Iodobenzylguanidine