Agarwal A, et al. - Study authors attempted to examine advanced neoplasia (AN) after endoscopic mucosal resection (EMR) of colonic laterally spreading lesions (LSLs). They performed a retrospective study of patients who underwent injection-assisted EMR of colonic LSLs ≥ 10 mm. At a median of 1 year after EMR, AN occurred in 17.6% of all patients at initial surveillance colonoscopy. Results revealed that roughly half of the instances of AN were metachronous lesions. The information supported a 1-year surveillance interval after EMR of LSLs ≥ 10 mm with careful inspection of the entire colon, not just the prior resection site.