Intestinal Metaplasia Cohort for Gastric Cancer Prediction

This study is tracking patients with intestinal metaplasia — a stomach lining change that can increase the risk of gastric (stomach) cancer — to better predict who will develop cancer and who will not. Researchers want to improve screening tools. **You may be eligible if...** - You are a patient at Seoul National University Hospital - A previous endoscopy (camera exam of the stomach) visually identified intestinal metaplasia in your stomach lining **You may NOT be eligible if...** - You have already been diagnosed with gastric cancer or stomach adenoma - You have previously had stomach surgery (like gastrectomy) Talk to your doctor to see if this trial is right for you.