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Table 2. Regional Lymph Nodes (N)a

aReprinted with permission from AJCC: Gallbladder. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 211-7.
NXRegional lymph nodes cannot be assessed.
N0No regional lymph node metastasis.
N1Metastases to nodes along the cystic duct, common bile duct, hepatic artery, and/or portal vein.
N2Metastases to periaortic, pericaval, superior mesenteric artery, and/or celiac artery lymph nodes.