Skip to main content
. 2021 Oct 25;6:57. doi: 10.21037/tgh.2020.01.01

Table 2. Results for scoring each dissection maneuver for a D2 lymphadenectomy based on the guidelines published by the Korean Laparoscopic Gastrointestinal Surgical Society (KLASS).

Station Requirement Laparoscopic videos Open videos P value
Mean Lower CI Upper CI Mean Lower CI Upper CI
No injury was made to the any other organ 0.5 0.2 0.7 0.9 0.8 1.0 0.012
4Sb The left gastroepiploic artery and left gastroepiploic vein are divided at least below the bifurcation of the first gastric branch 0.5 0.3 0.7 0.6 0.3 0.8 0.707
No injury was made to the colon of splenic flexure 0.8 0.7 0.9 0.8 0.7 1.0 0.470
4d The branch of right gastroepiploic artery and vein are retrieved 0.9 0.8 1.0 0.8 0.6 1.0 0.530
6 The right gastroepiploic vein is divided just above the bifurcation of the anterior superior pancreaticoduodenal vein and the right gastroepiploic vein 0.8 0.6 1.1 0.6 0.4 0.9 0.274
The right gastroepiploic artery is divided just peripheral to the bifurcation of the right gastroepiploic artery and the anterior superior pancreaticoduodenal artery 0.7 0.5 0.9 0.5 0.3 0.7 0.156
The lowest anterior superior pancreaticoduodenal vein is identified and exposed 0.0 0.0 0.1 0.2 0.0 0.4 0.175
The prepancreatic soft tissues above the lowest anterior superior pancreaticoduodenal vein are completely removed 0.3 0.1 0.4 0.3 0.1 0.5 0.791
The prepancreatic soft tissues above the level of the bifurcation of the anterior superior pancreaticoduodenal vein and right gastroepiploic vein are completely removed 0.2 0.0 0.3 0.3 0.1 0.6 0.285
No injury was made to the pancreatic parenchyma 0.9 0.8 1.0 0.9 0.8 1.0 0.660
5 The root of right gastric artery is identified and exposed 0.9 0.8 1.0 0.9 0.7 1.0 0.444
12a The lower half of the proper hepatic artery is exposed; at least its anterior and left surfaces 0.8 0.7 0.9 0.8 0.6 1.0 0.754
The left side of the portal vein is identified and exposed and soft tissues are completely removed 0.6 0.3 0.8 0.6 0.3 0.8 1.000
8a The common hepatic artery is exposed; at least its anterior and superior surfaces 0.9 0.8 1.0 0.9 0.8 1.0 0.288
The soft tissues above the upper edge of the pancreas are completely removed 0.5 0.4 0.6 0.8 0.5 1.0 0.062
9 The retroperitoneal membrane is divided along the boundary between the right crus and the soft tissues around the celiac trunk to completely dissect No. 9 LNs 0.7 0.5 0.8 0.5 0.3 0.7 0.229
7 The root of the left gastric artery is exposed and ligated 0.9 0.8 1.0 0.9 0.8 1.0 1.000
11p The proximal half of the splenic artery is exposed, from its root to the site where the meandering splenic artery is in the closest vicinity to the stomach 0.9 0.8 1.0 0.7 0.4 0.9 0.151
The splenic vein is identified and exposed, or at least the dorsal side of pancreatic parenchyma is exposed 0.5 0.3 0.7 0.4 0.1 0.7 0.727
No pancreatic injury by heat of energy devices and/or assistant’s forceps was caused 1.0 1.0 1.0 0.9 0.8 1.0 0.151
1, 3 The soft tissue attached to the lesser curvature side of gastric wall is completely removed 0.9 0.8 1.0 0.8 0.7 0.9 0.139
No esophageal and/or gastric injury by heat of energy devices and/or blind manipulation was caused 1.0 0.9 1.0 0.9 0.7 1.0 0.232