Because of the relevance of anatomical location, cancers originating from the head of the pancreas, duodenum and distal common bile duct are collectively referred to as peri-potbelly cancers. There are 4 types of tumor epithelial cells originating from the jugular abdomen: (1) distal common bile duct (2) duodenal mucosa (3) pancreatic duct (4) jugular abdomen