Clinical applicability of gastroscopy with narrow-band imaging for the diagnosis of Helicobacter pylori gastritis, precancerous gastric lesion, and neoplasia

Figure 2 Magnifying narrow-band imaging endoscopy images of Helicobacter pylori-positive corpus mucosa and atrophic gastritis. A: Normal mucosal pattern showing a honeycomb-like subepithelial capillary network and regular arrangement of collecting venules; B: Helicobacter pylori-infected status presenting as polygonal swollen mucosa with dilated round crypt opening; C: Ridged surface structures encasing dilated coiled subepithelial capillaries indicate the presence of atrophic gastritis; D: Severe mucosal atrophy characterized by irregular coiled microvessels, loss of gastric pits, and greenish submucosal vessels.