<prompt> In pylorus preserving Pancreatoduodenectomy following is not resected -Pyloric antrumCBDDuodenumNone  <response>: 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. 