<prompt> All are resected in whipples operation except -DuodenumHead of pancreasPortal veinCommon bile duct  <response>: Whipples operation Pancreaticoduodenectomyis the most commonly performed operation for carcinoma of head of pancreas.It includes resection of: distal stomach gall bladderduodenum proximal jejunum CBD regional lymphatics head of pancreasRestoration of gastrointestinal continuity requirespancreaticojejunostomycholedochojejunostomy gastrojejunostomy 