Misdiagnosis of gastric oxyntic gland adenoma as hyperplastic polyp: A case report

Figure 1 Endoscopic and endoscopic ultrasound findings. A: Endoscopic findings, on April 14, 2022, endoscopy demonstrated that the surface showed a strawberry-like change and was hard with a tendency to bleed; B: Endoscopic ultrasound findings, endoscopic ultrasound findings indicate thickening of the mucosa and submucosa, interruption and disappearance of the mucosal muscular layer, and unclear layer boundaries.

Figure 2 Pathological findings. A: Hematoxylin-eosin staining (50 ×); B: Hematoxylin-eosin staining (100 ×). Pathology suggested that atypia is not obvious. The epithelium covering is normal and mainly shows the differentiation of parietal cells.

Figure 3 Pathology re-examination. A and B: Thickening of the muscular layer of the lesser curvature mucosa of the gastric body was revealed after three years.