Current status of intrahepatic cholangiocarcinoma

Table 2 Lymph node groups by tumor location

	N1	N2	N3
Right lobe	Hepatoduodenal ligament	Along left gastric artery	Distant
		Along common hepatic artery
		Along celiac artery
		Posterior surface of pancreas head
Left lobe	Right cardiac region	Along left gastric artery
	Lesser curvature of stomach	Along common hepatic artery
		Along celiac artery	Distant
	Hepatoduodenal ligament	Posterior surface of pancreas head

N3 distant: Abdominal aorta, root of the mesentery, inferior vena cava, etc.