Carcinoid tumours commonly arise from:: (A) G. cells in pancreas, (B) Argentaffin cells of small intestine, (C) Pancreatic endocrine tumour, (D) Colon polyps
Answer is B. Ans. (b) Argentaffin cells of small intestineCarcinoid tumors arise from argentaffin cells of the crypts of Lieberkuhn and are found from the distal duodenum to the ascending colon, areas embryologically derived from the midgut.