Paraneoplastic Endocrine SyndromesMalignant Carcinoid SyndromeCarcinoid TumorParaneoplastic SyndromesCarcinoid Heart DiseaseHydroxyindoleacetic AcidParaneoplastic Syndromes, Nervous SystemParaneoplastic PolyneuropathySyndromeParaneoplastic Cerebellar DegenerationFlushingIleal NeoplasmsOctreotideNeuroendocrine TumorsIntestinal NeoplasmsGastrointestinal NeoplasmsLimbic EncephalitisParaneoplastic Syndromes, OcularSomatostatinLiver NeoplasmsHepatic ArterySerotoninLambert-Eaton Myasthenic SyndromeEndocrine GlandsEndocrine System