Background:The optimal technique for removal of diminutive or small colorectal polyps is debatable. Objective:To compare the complete resection rates of cold snare polypectomy (CSP) and hot snare polypectomy (HSP) for the removal of adenomatous polyps(3-9mm). Design：Prospective randomized controlled study. Setting：Three tertiary referral hospitals. Patients：we will recruit a total of 330 polyps(3-9mm). Interventions:Enrolled patients were randomly assigned to one of the two polypectomy protocols (CSP vs. HSP) using a computer-generated random sequence. If a patient had one or more polyps, all eligible polyps were removed using the initially assigned polypectomy protocol. After the initial polypectomy, additional EMR was performed at the polypectomy site to assess the presence of residual polyp tissue. Main Outcome Measurements:The primary study outcome was to compare the complete polyp resection rate between groups. Secondary outcomes included rate of postpolypectomy adverse events, including bleeding, perforations,infection and rate of tissue retrieval(Complete resection was defined as the absence of residual polyp tissue in the EMR sections of the polypectomy site).
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complete polyp resection rate
Timeframe: one year