Collagenous gastritis: Review

Figure 1 Endoscopic findings of collagenous gastritis. A: Nodular lesions (black arrow) in the greater curvature of the gastric body. Depressive mucosal lesions are seen in between nodular lesions (white arrow)[34]; B: Magnifying endoscopic image with narrow band imaging. Amorphous or absent surface pit pattern and abnormal capillary vessel patterns are seen in the depressed mucosal area[41].

Figure 2 Histological findings of collagenous gastritis. A: Nodular mucosal lesion did not show marked inflammatory infiltration and collagen deposition; B: Depressive mucosal lesion showed a thick collagen deposition (black arrow) and inflammatory infiltrates (red arrow). The glandular atrophy and epithelial damage is marked (black arrowhead)[34].