Ans. (a) interaortocaval NodeRef: Blumgart 6th Edition Page 788, 799* The first Manuever during Extended Cholecystectomy is to do Kocherisation and assess Aortocaval and Retro pancreatic nodes. The coeliac node must also be assessed; and Suspicious nodes sent for Frozen Section and if positive the procedure is terminated.* N1 = Metastases to nodes along cystic duct, common bile duct, hepatic artery, and/or portal vein* N2 = Metastases to periaortic, pericaval, superior mesenteric artery, and/or celiac artery nodes* M1 = Interaortocaval nodes