Table 1.

Characteristics and Results of Traction Methods for Colorectal Endoscopic Submucosal Dissection

	n	Lesion size (Mean, mm)	Procedure time (Mean, min)	En bloc resection (%)	Adversed event	Special devices	Reinsertion of endoscope	Limitations
External forceps	13	33	60	100	1a)	Required	Needed	Only for rectal lesions
Modified clip-with-line	23	27	61	100	1a)	Not required	Not needed
Clip-and-snare with a prelooping technique	17	32.5	45.6	100	1a)	Not required	Needed	Overtube is required for deep colon lesions
S-O clip-assisted	27	33.5	37.4	100	0	Required	Not needed
Ring-shaped thread	21	n/a	80b)	n/a	0	Not required	Not needed

n/a, not available.

^a)Delayed bleeding.

^b)Only median is listed.