J Clin Med Res

Journal of Clinical Medicine Research, ISSN 1918-3003 print, 1918-3011 online, Open Access

Article copyright, the authors; Journal compilation copyright, J Clin Med Res and Elmer Press Inc

Journal website http://www.jocmr.org

Original Article

Volume 8, Number 9, September 2016, pages 662-666

The Influence of Snare Size on the Utility and Safety of Cold Snare Polypectomy for the Removal of Colonic Polyps in Japanese Patients

Tables

**Table 1.** Comparison of Characteristics of Patients in the EMR and CSP Groups
	EMR	CSP	P value
EMR: endoscopic mucosal resection; CSP: cold snare polypectomy; NS: not significant.
Number of patients	423	106
Sex (male/female)	285/138	83/23	< 0.05
Mean age in years (range)	67.9 (35 - 90)	66.8 (40 - 85)	NS
Hypertension (presence/absence)	169/254	37/69	NS
Diabetes mellitus (presence/absence)	76/347	23/83	NS
Liver disease (presence/absence)	17/406	6/100	NS
Hemodialysis (presence/absence)	12/411	4/102	NS
Other comorbidities (presence/absence)	97/326	18/88	NS
Usage of an anticoagulant and/or antiplatelet drugs (%)	22	19	NS

**Table 2.** Comparison of Polyp Characteristics Between the EMR and CSP Groups
	EMR	CSP	P value
EMR: endoscopic mucosal resection; CSP: cold snare polypectomy; NS: not significant.
Number of lesions	1,010	175
Mean lesion size in mm (range)	6.8 (3 - 15)	5.0 (3 - 10)	NS
Macroscopic type of polyp (sessile/semipedunculated/pedunculated)	582/323/105	135/40/0	< 0.05
Histological type of polyp (adenocarcinoma/adenoma/hyperplasia)	18/905/87	0/157/18	NS

**Table 3.** Comparison of the Histologically Complete Resection Rate and Frequency of Complications in the EMR and CSP Groups
	EMR	CSP	P value
EMR: endoscopic mucosal resection; CSP: cold snare polypectomy; NS: not significant.
Histologically complete resection rate (%)	60.9	53.1	NS
Postoperative bleeding (%)	0.2	0	NS
Perforation (%)	0	0	NS

**Table 4.** Comparison of Polyp Characteristics Based on Snare Length
	CSP using short snare	CSP using long snare	P value
CSP: cold snare polypectomy; NS: not significant.
Number of lesions	86	89
Macroscopic type of polyp (sessile/semipedunculated)	68/18	67/22	NS
Histological type of polyp (adenoma/hyperplasia)	80/6	77/12	NS

**Table 5.** Comparison of the Histologically Complete Resection Rate and Frequency of Complications by CSP Snare Length
	CSP using short snare	CSP using long snare	P value
CSP: cold snare polypectomy; NA: not applicable.
Histologically complete resection rate (%)	61.6	44.9	< 0.05
Complications	0	0	NA