Endoscopic submucosal dissection for small submucosal tumors of the rectum compared with endoscopic submucosal resection with a ligation device

Table 1 Clinical findings and characteristics between endoscopic submucosal resection with a ligation device and endoscopic submucosal dissection n (%)

	ESMR-L (n = 21)	ESD (n = 18)	P value
Age (yr, mean ± SD)	65.7 ± 14.2	61.2 ± 12.9	0.306
Sex (male/femal)	14/7	8/10	0.206
Tumor size (mm, mean ± SD)	4.9 ± 1.7	5.1 ± 2.1	0.681
Macroscopic type
Sessile	21 (100)	17 (94.4)	0.462
Semipedunculated	0 (0)	1 (5.6)
Location
Rb	18 (85.7)	17 (94.4)	0.609
Ra	3 (14.3)	1 (5.6)
History of previous biopsy	18 (85.7)	7 (38.9)	0.003

ESMR-L: Endoscopic submucosal resection with a ligation device; ESD: Endoscopic submucosal dissection.