Carcinoid TumorCarcinoma, NeuroendocrineMalignant Carcinoid SyndromeNeuroendocrine TumorsCarcinoid Heart DiseaseLung NeoplasmsIleal NeoplasmsBronchial NeoplasmsAppendiceal NeoplasmsGastrointestinal NeoplasmsHydroxyindoleacetic AcidIntestinal NeoplasmsChromograninsOctreotideChromogranin AACTH Syndrome, EctopicDuodenal Neoplasms