Risk factors associated with multiple and missed gastric neoplastic lesions after endoscopic resection: prospective study at a single institution in south Korea.

Background/aims: Only a small part of visible gas tric mucosal lesion can be removed by endoscopic resection. This study is aimed to identify incidence rate and associated risk factors of multiple and missed gastric lesions, and proper timing of follow-up en doscopy.

Methodology: Endoscopic surveillance was performed on 1 week, and 1, 6, 12 months af ter endoscopic resection.