Collagenous gastritis in a young Chinese woman: A case report

Figure 1 Findings of white light endoscopy, endoscopic ultrasound, and histopathology in 2020. A: Esophagogastroduodenoscopy (EGD) in 2020 in a forward endoscopic view showed diffuse nodular elevation-depression changes in the mucosa of the entire gastric corpus; B: EGD in 2020 (in a retroflexed endoscopic view) showed diffuse nodular elevation-depression changes in the mucosa of the entire gastric corpus; C: EGD in 2020 showed nodular reddening-like changes in the anterior wall of the gastric antrum; D: Endoscopic ultrasound in 2020 showed an intact five-layer structure of the gastric corpus wall with hypoechoic changes in the mucosal layer, which is different from the echoes of normal mucosal layer; E: A biopsy of the gastric corpus in 2020 reported moderate chronic inflammation with erosion and mild activity; F: Masson staining of a gastric corpus specimen in 2020 showed collagen bands (blue areas).