The numbering of regional lymph nodes (LNs) of the pancreas according to the Japanese Pancreatic Society classification system22
| 1 | Right cardial LNs |
| 2 | Left cardial LNs |
| 3 | LNs along the lesser curvature of the stomach |
| 4 | LNs along the greater curvature of the stomach |
| 5 | Suprapyloric LNs |
| 6 | Infrapyloric LNs |
| 7 | LNs along the left gastric artery |
| 8 | LNs around the common hepatic artery |
| 9 | LNs around the coeliac trunk |
| 10 | LNs at the hilum of the spleen |
| 11 | LNs around the splenic artery |
| 12 | LNs of the hepatoduodenal ligament |
| 13 | Posterior pancreaticoduodenal LNs |
| 14 | LNs around the superior mesenteric artery |
| 15 | LNs along the middle colic artery |
| 16 | Para-aortic LNs |
| 17 | Anterior pancreaticoduodenal LNs |
| 18 | Inferior LNs |