Regional Lymph Nodes
Pancreas
Lymph nodes superior and inferior to head and body of pancreas, anterior and posterior pancreaticoduodenal, pyloric, proximal mesenteric nodes, and common bile duct lymph nodes, splenic hilar, pancreatic tail, peripancreatic, hepatic artery, infrapyloric (head only), subpyloric (head only), celiac (head only), superior mesenteric, pancreaticolienal (body and tail only), splenic (body and tail only), retroperitoneal, lateral aortic.
Gallbladder
Cystic duct, pericholedochal, hepatic hilar, celiac, periduodenal, periportal, peripancreatic (along head of pancreas), superior mesenteric, node of foramen of Winslow
Liver
Hepatic hilar (hepatic, periportal)
Extrahepatic bile ducts
Cystic duct, pericholedochal, celiac, periduodenal, periportal, peripancreatic (along head of pancreas), superior mesenteric, node of foramen of Winslow, superior retropancreaticoduodenal, posterior pancreaticoduodenal.
Ampulla of Vater
Lymph nodes superior and inferior to head and body of pancreas, anterior and posterior pancreaticoduodenal, pyloric, proximal mesenteric nodes, and common bile duct lymph nodes.