Impact of tumor location on clinical outcomes of gastric endoscopic submucosal dissection

Table 3 Comparison of the posterior wall and non-posterior wall groups n (%)

	Posterior wall	Non-posterior wall	Pvalue
Tumor size, mm
< 20	278 (68.6)	756 (72.8)	0.065
≥ 20	127 (31.4)	282 (27.2)
Ulcer	21 (5.2)	50 (4.8)	0.771
Pathology
Dysplasia	216 (53.3)	494 (47.6)	0.053
Carcinoma	189 (46.7)	544 (52.4)
Procedure time, min, mean ± SD	69.41 ± 52.55	58.84 ± 44.39	< 0.001
Curability
Incomplete resection	60 (14.8)	96 (9.2)	0.002
Complete resection	345 (85.2)	942 (90.8)
Resectability
En bloc	358 (88.4)	960 (92.5)	0.013
Piecemeal	47 (11.6)	78 (7.5)
Perforation	14 (3.5)	25 (2.4)	0.27
Post-ESD bleeding	17 (4.2)	44 (4.2)	0.552

ESD: Endoscopic submucosal dissection.