Which Factors Are Important for Successful Sentinel Node Navigation Surgery in Gastric Cancer Patients? Analysis from the SENORITA Prospective Multicenter Feasibility Quality Control Trial

Table 1

Number of failure cases at each checklist.

Institution	Checklists
	Step 1	Step 2	Step 3	Step 4	Step 5	Step 6	Step 7
A			4	1		2	2
B			3		1	2	5
C			1	2			1
D	1	1	2	1	2	2	4
E			3		4	3	3
F							3
G	2	2	2	2	4	4	5
Total number of failure cases at each checklist	3	3	15	6	11	13	23

Step 1. Tracer injected at submucosal layer by intraoperative EGD—yes or no. Step 2. Tracer injected at 4 sites by intraoperative EGD—yes or no. Step 3. Intraluminal or extralumial leakage of tracer occurred during the injection by intraoperative EGD—yes or no. Step 4. Tracer injected within 3 minutes from 1st injection to 4th injection by intraoperative EGD—yes or no. Step 5. At least 1 SLB was identified during the laparoscopic surgery—yes or no. Step 6. SBNs (HN, GN, HGN, and BN) were evaluated by intraoperative frozen biopsy—yes or no. Step 7. SBNs (HN, GN, HGN, and BN) were identified at least 5 at the back table and frozen section—yes or no. EGD: esophagogastroduodenoscopy; SLB: sentinel lymphatic basin; SBN: sentinel basin node; HN: hot node; GN: green node; HGN: hot and green node, BN: basin node.