Key Points Question Is new gastric cancer (GC) detectable approximately 1 year after intensive index endoscopic examination using both white light and narrow-band imaging among patients with a high risk… Click to show full abstract
Key Points Question Is new gastric cancer (GC) detectable approximately 1 year after intensive index endoscopic examination using both white light and narrow-band imaging among patients with a high risk of GC? Findings In this case-control study involving secondary analysis of a randomized clinical trial of 4523 patients with a high risk of GC, the rate of new GC detected within approximately 1 year after intensive index endoscopic examination was 2.6%, which was similar to the rate of early GC detected by index endoscopy (3.0%). Meaning This study’s findings suggest that 1-year surveillance is warranted among patients with a high risk of GC even after intensive endoscopic examination using both white light and narrow-band imaging.
               
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