Table. Treatment options in mucosal and submucosal stomach cancer (from e3).

Infiltration	Mucosal (T1a)				Submucosal (T1b)
Histology	Nonulcerated		Ulcerated		sm1	sm2
Diameter	≤ 2 cm	>2 cm	≤ 3 cm	>3 cm	≤ 3 cm	Any diameter
Intestinal type	ER	Extended indications ER	Extended indications ER	D2 gastrectomy	Extended indications ESD	D2 gastrectomy
Diffuse type	Consider gastrectomy	D2 gastrectomy	D2 gastrectomy	D2 gastrectomy	D2 gastrectomy	D2 gastrectomy

ER, endoscopic resection; ESD, endoscopic submucosal dissection