This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach & Duodenum, Subject name: Surgery
In pylorus preserving Pancreatoduodenectomy following is not resected - 
Select and explain. 
A. Pyloric antrum, B. CBD, C. Duodenum, D. None
A: Pyloric antrum
Answer: A: Pyloric antrum 
Explanation: Ans. is 'a' i.e., Pyloric antrum o The standard resection for a tumour of the pancreatic head or the ampulla is a pylorus-preserving pancreatoduodenectomy (PPPD).o This involves removal of the duodenum and the pacreatic head, including the distal part of the bile duct.