Table 1. Clinicopathological features of eight patients who underwent endoscopic submucosal dissection for large gastric cardia or pyloric lesions that extended more than three-fourths of the luminal circumference.

Resection size (mm)	Tumor size (mm)	Depth of tumor invasion	Ulcer scar	Method of stricture prevention	Stricture	Endoscopic balloon dilatation	Follow-up period (days)	Period of ulcer healing (days)
100	85	m	–	Oral prednisolone	–	0	989	132
60	18	m	–	Triamcinolone infection	–	0	742	80
62	38	m	+	Oral prednisolone	–	0	721	133
55	30	m	–	Triamcinolone infection	–	0	357	88
58	40	m	–	Triamcinolone infection	+	3	288	123
42	10	–	–	Triamcinolone infection	–	0	364	84
40	16	m	–	Triamcinolone infection	–	0	185	87
63	25	sm1 (100 μm)	–	Triamcinolone infection	–	0	87	56
Mean 59	Mean 27.5					Mean 0	Mean 360.5	Mean 87.5