<prompt> Carcinoid tumour is most common inEsophagusStomachJejunumAppendix  <response>: Answer is D Appendix; Antong, the given option the most common site of carcinoid tumour is appendix. Carcinoid tumor location, Frequency of Metastases, and Association with the Carcinoid Syndrome Site Location of Total Incidence of Metastases Incidence of Carcinoid Syndrome Foregut Esophagus 0.1 - - Stomach 4.6 10 9.5 Duodenum 2.0 - 3.4 Pancreas 0.7 71.9 20 Gallbladder 0.3 17.8 5 Bronchus, lung, trachea 27.9 5.7 13 Midgut Jejunum Ileum 1.8 14.9 158.4 9 9 Meckels diveiculum 0.5 13 Appendix Colon Liver Ovary Testis Hindgut 4.8 8.6 0.4 1.0 0.1 38.8 51 32.2 32 - 1 5 - 50 50 Rectum 13.6 3.9 - 