title: Carcinoid tumor.
mesh_terms: D000368:Aged; D006801:Humans; D007414:Intestinal Neoplasms / Q000473:pathology*; D008113:Liver Neoplasms / Q000473:pathology / Q000556:secondary*; D008297:Male; D008303:Malignant Carcinoid Syndrome / Q000175:diagnosis / Q000473:pathology*