Burgeoning study of sentinel-node analysis on management of early gastric cancer after endoscopic submucosal dissection

Table 1 Guidelines for endoscopic submucosal dissection of gastric cancer

Histology	Depth
	Mucosal cancer				Submucosal cancer
	No ulceration		Ulcerated		SM1	SM2
	≤ 20	> 20	≤ 30	> 30	≤ 30	Any size
Differentiated	-	--	--	---	--	---
Undifferentiated	----	---	---	---	---	---

Guideline and expanded criteria for endoscopic submucosal dissection in early gastric cancer. -: Guideline criteria for ESD; --: Expanded criteria for ESD; ---: Surgery (gastrectomy + lymph node dissection); ----: Surgery or ESD. ESD: Endoscopic submucosal dissection.