On the road to standardization of D2 lymph node dissection in a European population of patients with gastric cancer

Table 1 The lymphatic system of the stomach[12]

LN groups	LN topography
№1	Right paracardiac LNs
№2	Left paracardiac LNs
№3	LNs along the lesser curvature
№4sa	LNs along the short gastric vessels
№4sb	LNs along the left gastroepiploic vessels
№4d	LNs along the right gastroepiploic vessels
№5	Suprapyloric LNs
№6	Infrapyloric LNs
№7	LNs along the left gastric artery
№8а	LNs along the common hepatic artery (anterosuperior group)
№9	LNs at the celiac trunk
№10	LNs at the splenic hilum
№11р	LNs along the proximal splenic artery
№11d	LNs along the distal splenic artery
№12a	LNs in the hepatoduodenal ligament (along the hepatic artery)
№12b	LNs in the hepatoduodenal ligament (along the bile duct)
№12р	LNs in the hepatoduodenal ligament (behind the portal vein)
№13	Retro-pancreaticoduodenal LNs
№14а	LNs along the superior mesenteric artery
№14v	LNs along the superior mesenteric vein
№15	LNs along the middle colic vessels
№16	Para-aortic LNs
№17	LNs on the anterior surface of the pancreatic head
№18	LNs along the inferior margin of the pancreas
№19	Infradiaphragmatic LNs
№20	LNs in the esophageal hiatus of the diaphragm

LNs: Lymph nodes.

Table 2 Lymph node groups (compartments 1-3) by location of tumor

Location lymph node station	LMU/MUL MLU/UML	LD/L	LM/M/ML	MU/UM	U	E+
No. 1 rt paracardial	1	2	1	1	1
No. 2 lt paracardial	1	M	3	1	1
No. 3 lesser curvature	1	1	1	1	1
No. 4sa short gastric	1	M	3	1	1
No. 4sb lt gastroepiploic	1	3	1	1	1
No. 4d rt gastroepiploic	1	1	1	1	2
No. 5 suprapyloric	1	1	1	1	3
No. 6 infrapyloric	1	1	1	1	3
No. 7 lt gastric artery	2	2	2	2	2
No. 8a ant comm hepatic	2	2	2	2	2
No. 8b post comm hepatic	3	3	3	3	3
No. 9 celiac artery	2	2	2	2	2
No. 10 splenic hilum	2	M	3	2	2
No. 11p proximal splenic	2	2	2	2	2
No. 11d distal splenic	2	M	3	2	2
No. 12a lt hepatoduodenal	2	2	2	2	3
No. 12b,p post hepatoduod	3	3	3	3	3
No. 13 retropancreatic	3	3	3	M	M
No. 14v sup mesenteric v.	2	2	3	3	M
No. 14a sup mesenteric a.	M	M	M	M	M
No. 15 middle colic	M	M	M	M	M
No. 16a1 aortic hiatus	M	M	M	M	M
No. 16a2,b1 paraaortic, middle	3	3	3	3	3
No. 16b2 paraaortic, caudal	M	M	M	M	M
No. 17 ant pancreatic	M	M	M	M	M
No. 18 inf pancreatic	M	M	M	M	M
No. 19 infradiaphragmatic	3	M	M	3	3	2
No. 20 esophageal hiatus	3	M	M	3	3	1
No. 110 lower paraesophag	M	M	M	M	M	3
No. 111 supradiaphragmatic	M	M	M	M	M	3
No. 112 post mediastinal	M	M	M	M	M	3

M: Lymph nodes regarded as distant metastasis.