Inclusion Criteria:  Intermediate-size (10 to 20 mm) colorectal polyps Morphologically sessile (Is), slightly elevated (IIa), flat (IIb), and slightly depressed (IIc) as Paris classification of superficial neoplastic lesions Laterally spreading tumor (granular and nongranular type) as Kudo classification.  Exclusion Criteria:  Pedunculated or excavated/ulcerated polyps Polyps with features strongly suggestive of submucosal invasive carcinoma Polyps in patients with inflammatory bowel disease, familial polyposis, electrolyte abnormality, and coagulopathy Residual lesions after endoscopic resection or presence of severe submucosal fibrosis.