Published online Dec 16, 2018. doi: 10.4253/wjge.v10.i12.378
Peer-review started: August 20, 2018
First decision: October 5, 2018
Revised: October 17, 2018
Accepted: November 7, 2018
Article in press: November 8, 2018
Published online: December 16, 2018
Core tip: Local recurrences of neoplastic colonic polyps can occur, especially after resection of large polyps or piecemeal resection. Local recurrences that develop after endoscopic resection of intramucosal neoplasms that lacked risk factors for lymph node metastasis or positive vertical margins are usually treated endoscopically. We perform underwater endoscopic mucosal resection for relatively small (≤ 10-15 mm) recurrent lesions and endoscopic submucosal dissection for larger lesions.