Int J Gastrointest Interv.  2023 Nov;12(4):183-187. 10.18528/ijgii230057.

Comparison of the clinical efficacy of cold snare polypectomy using a thin-wire snare and thick-wire snare for small colorectal polyps

• Yoon HJ
• Jung Y
• Cho YS
• Chung IK

• KMID: 2547833
• DOI: http://doi.org/10.18528/ijgii230057

Abstract

Background
Cold snare polypectomy (CSP) is an established technique for resecting small colorectal polyps without electrical current. This study aimed to compare the clinical effectiveness of thin-wire mini-snares and thick-wire mini-snares during CSP for small colorectal polyps.
Methods
We prospectively enrolled 120 patients with colon polyps (5–8 mm in diameter) who underwent CSP between July and December 2017. Patients were randomly divided into two groups (thick-snare and thin-snare) according to the thickness of the snares. The complete resection rate (CRR), polyp characteristics, technical factors, and histopathologic features of resected specimens were carefully analysed.
Results
In total, 137 eligible polyps were successfully resected using CSP (thin-snare group: n = 66, thick-snare group: n = 71). The location, size, morphology, and histologic findings of the polyps did not show statistically significant differences between the two groups. The CRR (thin-snare: 77.3% vs. thick-snare: 84.5%, P = 0.068), retrieval rate (100% in both groups), and the rates of tissue fly-away (P = 0.069), containing submucosal tissue (7.6% vs. 9.9%, P = 0.637), and intraprocedural or delayed polypectomy bleeding were not significantly different between the two groups. The CRR was significantly lower in sessile serrated lesions than in adenomas (odds ratio, 0.1; 95% confidence interval, 0.12–0.57; P = 0.010).
Conclusion
In conclusion, when performing CSP for small polyps, the snare thickness does not seem to have a significant effect on the clinical outcomes, including CRR and the occurrence of complications.

Keyword

Adenoma; Colonic polyps; Hemorrhage