Train Your Eye to Detect Early Gastric Cancer

Train Your Eye to Detect Early Gastric Cancer

You are performing a routine upper endoscopy and notice a subtle area of redness in the gastric body. There is no obvious mass. No dramatic ulcer crater. The mucosa looks slightly irregular, and the vascular pattern seems to thin out in one zone. Could this be early gastric cancer, or is it simply chronic gastritis? The answer depends entirely on knowing what to look for.

Why Early Gastric Cancer Is Easy to Miss

Early gastric cancer rarely presents as a large, obvious mass. Instead, it hides behind subtle mucosal changes that are easy to dismiss during a routine exam. The key is to systematically evaluate four cardinal features: protrusion, redness, depression, and erosion. Each of these findings raises the probability of neoplasia, but they often appear in muted form, especially in flat (Type 0-II) lesions.

What separates the endoscopist who catches early gastric cancer from the one who does not is the discipline of looking for a demarcation line, evaluating the mucosal surface pattern, and assessing the vascular architecture. These three features form the diagnostic backbone of early gastric cancer recognition.