Cold Snare Polypectomy Versus. Endoscopic Mucosal Resection

Comparison of Efficacy Between Cold Snare Polypectomy and Endoscopic Mucosal Resection in Treatment of Small Polyp

The investigators will investigate the efficacy of EMR compared to CSP in treatment of small colon polp (6~10mm).

One aim of this study was to investigate the necessity of EMR on resection of small colon polyp.

With sized polyp from 6mm to less than 10mm, it has been classified by the previous studies as a "small polyp".

Their potential for advanced neoplasia is usually size-dependent, but some recent studies found that, even in diminutive and small polyps, the rate of advanced neoplasia is relatively high about 9%-10%.

The investigators will prospectively investigate postprocedural outcomes, such as retrieval rate, procedural time, overall complication rate (Intraprocedural bleeding, postprocedural bleeding, and perforation) in colonoscopic polypectomy of small polyp between CSP and EMR.

Inclusion Criteria:

• All those over the age of 20 years who agree informed consent and who have at least one polyp of eligible size (6-10 mm)

Exclusion Criteria:

• (1) patients taking anticoagulant therapy during the past 1 week of the procedure, (2) known coagulopathy, (3) history of liver cirrhosis, chronic kidney disease, malignancy, inflammatory bowel diseases or significant infectious disease, (4) American Society of Anesthesiology class III or more, and (5) pedunculated polyps and polyps with malignant feature.