EMR Versus CSP in the Treatment of Sessile Serrated Lesions Less Than 10mm in Size

Inclusion Criteria: * Aged between 35 and 75 years * Suspected sessile serrated lesions less than 10mm in size in screening, surveillance or therapeutic colonoscopy * 0-Is or 0-IIa according to Paris classification * Type 1 according to NICE and JNET classification * Type II according to pit pattern * Patients must sign an informed consent form prior to registration in study Exclusion Criteria: * Unsuitable for removal by EMR or CSP * Suspected dysplasia or malignancy * Recurrent sessile serrated lesions after endoscopic resection * Familial adenomatous polyposis, Lynch syndrome or serrated polyposis syndrome * History of inflammatory bowel disease * Patients taking anticoagulant and antiplatelet agents before the examination * Severe illness or other high-risk conditions that prevent the patient from cooperating with or tolerating endoscopic therapy * Refusal to sign the informed consent form or any other factors that are not suitable for enrollment or affect the ability to participate in the study