Figure 2.Pancreaticoduodenectomy specimen. The main pancreatic duct (probe inserted) run separately from the longitudinally open, intact common bile duct. The pedunculated mass grows within the lumen of the distal portion of the pancreatic duct protruding through its orifice and forming a polypoid mass in the periampullary area, causing mechanical obstruction of the orifice of the common bile duct by occluding its opening