<prompt> In Pylorus preserving type of Pancreaticoduodenectomy structure not resected is:Pyloric antrumCBDDuodenumNone  <response>: Ans. a Pyloric AntrumRef: Sabiston Page 1549 20th edition Pylorus Preserving Pancreaticoduodenectomy - Pyloric antrum is preserved In this surgery there is a reduced incidence of Post; pancreatectomy dumping and Bile reflux 