Gyrus-like endoscopic changes in autoimmune gastritis with past Helicobacter pylori infection: Two case reports and review of literature

Figure 4 Histopathological images from different regions of the patient’s stomach in Case 2. A: Hematoxylin and eosin staining of an antral biopsy specimen; B: Magnified view of the boxed area in A (the yellow arrows indicate G-cell hyperplasia); C: Hematoxylin and eosin staining of a corporal biopsy specimen; D: Magnified view of the boxed area in C (blue arrows indicate pseudohypertrophy and luminal protrusion of the parietal cells); E: Gastrin staining of an antral biopsy specimen; F: Chromogranin A staining of a corporal biopsy specimen; G: Helicobacter pylori (H. pylori) staining of an antral biopsy specimen; H: H. pylori staining of a corporal biopsy specimen.