Abstract Background Criteria for endoscopic resection in patients with early gastric cancer (EGC) have been expanded recently by the National Cancer Centre (NCC). This study compared long-term outcomes in patients with EGC who underwent endoscopic treatment according to guideline criteria with those treated according to expanded criteria. Methods Baseline and outcome data from patients undergoing curative endoscopic resection for EGC between January 1999 and December 2005 were collected from electronic medical records. Survival time hazard ratios and 95 per cent confidence intervals were calculated using the Cox proportional hazards model. Results Of 1485 patients who had a curative resection, 635 (42·8 per cent) underwent resection according to traditional criteria and 625 (42·1 per cent) according to expanded criteria. There was no significant difference in overall survival between the groups. Conclusion Patients who have treatment following the expanded criteria have similar long-term survival and outcomes to those treated according to guideline criteria.

Endoscopic resection of early gastric cancer treated by guideline and expanded National Cancer Centre criteria