AIM: To identify the mucosal patterns of Helicobacter pylori ( H. pylori)-related gastritis in the gastric corpus using standard endoscopy and to evaluate their reproducibility.METHODS: A total of 112 consecutive patients underwent upper gastrointestinal endoscopy. The endoscopists classified the endoscopic findings into 4 patterns.In the second part of the study, 90 images were shown to 3 endoscopists in order to evaluate the inter-observer and intra-observer variability in image assessment.RESULTS: The mucosal patterns of the gastric body were categorized into 4 types. Type 1 pattern was de-fined as cleft-like appearance, type 2 as regular arrangement of red dots, type 3 pattern as the mosaic mucosal pattern and type 4 pattern as the mosaic pattern with a focal area of hyperemia. Type 1 and type 2 mucosal patterns were statistically significant in predicting H. pylorinegative status as compared with other mucosal types (χ~2 = 12.79 and 61.25 respectively, P < 0.01). Type 3and type 4 mucosal patterns were statistically significant in predicting a H. pylori-positive status as compared with other mucosal types (χ~2 = 21.22 and 11.02 respectively,P < 0.01). Furthermore, the sensitivity, specificity,positive and negative predictive values of type 3 plus type 4 patterns for predicting H. pylori-positive gastric mucosa were 100%, 86%, 94%, and 100%, respectively.agreement in assessing the various endoscopic patterns were 0.808 (95% CI, 0.678-0.938) and 0.826 (95% CI,0.727-0.925) respectively.CONCLUSION: Our study suggests that mucosal patterns in H. pylori-infected gastric mucosa without atrophy can be reliably identified using standard endoscopy in the gastric corpus.