Table I.

Post-endoscopic resection residues at resection margins in patients with gastrointestinal neuroendocrine tumors and the follow-up data

Patient no.	Tumor location	Tumor size [mm]	Treatment technique	Tumor depth	Margin involvement	Additional treatment
1	Duodenum	9	ESD	Muscularis	VRM	Lost to follow-up
2	Duodenum	8	EMR	Submucosa	VRM	No
3	Rectum	6	Endoscopic polypectomy	Submucosa	VRM	No
4	Rectum	5	Endoscopic polypectomy	Submucosa	VRM	No
5	Rectum	8	Endoscopic polypectomy	Submucosa	VRM	No
6	Rectum	5	Endoscopic polypectomy	Submucosa	VRM	No
7	Rectum	6	Endoscopic polypectomy	Muscularis	VRM	Surgery
8	Rectum	8	Endoscopic polypectomy	Submucosa	VRM	No
9	Rectum	6	Endoscopic polypectomy	Mucosa	LRM	Additional ESD
10	Rectum	8	Endoscopic polypectomy	Submucosa	VRM	Additional ESD
11	Rectum	6	Endoscopic polypectomy	Submucosa	VRM	No
12	Rectum	5	Endoscopic polypectomy	Submucosa	LRM	No
13	Rectum	5	EMR	Submucosa	VRM	Death
14	Rectum	6	EMR	Submucosa	VRM	No
15	Rectum	10	ESD	Submucosa	VRM	No
16	Rectum	8	EMR	Muscularis	VRM	Surgery
17	Rectum	1	EMR	Submucosa	VRM	No
18	Rectum	1	EMR	Submucosa	LRM	Lost to follow-up

EMR – endoscopic mucosal resection, ESD – endoscopic submucosal dissection, VRM – vertical resection margin, LRM – lateral resection margin.