Lymph Nodes

Site/number/size/number involved/limit node/extracapsular spread. Regional nodes: cystic duct, pericholedochal, hilar, peripancreatic (head), periduodenal, periportal, coeliac, superior mesenteric. A regional lym-phadenectomy will ordinarily include a minimum of three lymph nodes.

pN0 no regional lymph node metastasis pN1 metastasis in regional lymph node(s).

Nodal metastases are usually present at the time of diagnosis with subsequent spread to local structures (liver, pancreas, gall bladder, duodenum), lungs and peritoneal cavity.

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