The incidence and locational predilection of metachronous tumors after endoscopic resection of high-grade dysplasia and early gastric cancer

摘要

The incidence of metachronous lesions after endoscopic resection (ER) of high-grade dysplasia (HGD) has not been evaluated, and optimal surveillance strategy remains vague. This study aimed to evaluate the incidence and characteristics of metachronous tumors including HGD and early gastric cancer (EGC) arising after ER.