Advantage of endoscopic mucosal resection with a cap for rectal neuroendocrine tumors

Table 4 Clinical outcomes by tumor size n (%)

	size ≤5 mm (n = 63)			5 mm < size ≤10 mm (n = 46)
	EMR-C(n = 50)	ESD(n = 13)	P value	EMR-C(n = 15)	ESD(n = 31)	P value
Procedure time (min), mean ± SD	3.94 ± 1.27	12.52 ± 3.42	< 0.001	3.45 ± 0.60	14.96 ± 8.85	< 0.001
Complication	0	2 (15.4)	0.165	0	2 (6.5)	0.161
Bleeding	0	2 (15.4)		0	2 (6.5)
Perforation	0	0		0	0
Endoscopic complete resection	50 (100)	13 (100)		15 (100)	31 (100)
Histologic complete resection	48 (96.0)	13 (100)	0.472	12 (80.0)	22 (71.0)	0.524
Vertical margin involvement	0 (0.0)	0 (0.0)		0 (0.0)	0 (0.0)
Lateral margin involvement	0 (0.0)	0 (0.0)		1 (6.7)	2 (6.5)	0.979
Vertical and Lateral margin involvement	1 (2.0)	0 (0.0)	0.614	0	2 (6.5)	0.161
Indeterminate margin	1 (2.0)	0 (0.0)	0.614	2 (13.3)	5 (16.1)	0.810
Vertical:lateral: Vertical and Lateral	1:0:0	0:0:0		1:1:0	1:2:2

EMR-C: Endoscopic mucosal resection with a cap; ESD: Endoscopic submucosal dissection.