This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Which is the MOST common site of ectopic pancreatic tissue? 
Select and explain. 
A. Stomach, B. Jejunum, C. Appendix, D. Hilum of spleen
A: Stomach
Answer: A: Stomach 
Explanation: Most common sites of ectopic pancreatic tissue are walls of stomach, duodenum or ileum, in Meckel's diveiculum or at the umbilicus. Islet tissue is frequently present when ectopic pancreas is located in the stomach and duodenum but not when it is present elsewhere.Less common sites includes colon, appendix, gallbladder, omentum and mesentery. Ref: Sabiston Textbook of Surgery: Expe Consult Premium Edition: Enhanced.