There is no free air or ascites. The lesser curvature of gastric angle shows wall thickening (black arrowheads) by submucosal edema from Fig.2 and spreads to posterior wall of antrum of Fig.7. Black arrow of Fig.4-Fig.6 which extends over posterior wall of stomach from lesser curvature is an acute ulcerative lesion. An acute gastric ulcer accompanied by hemorrhage was confirmed by endoscopy (Fig.A: white arrowheads).

Reference Case (10mm slice, gastric ulcer): A 50-year-old male developed epigastric pain and occasional vomiting after meals for three weeks. He came to ER because pain increased in intensity since five hours ago. Temperature: 36.0 degrees Celsius. Abdomen showed tenderness in epigastrium, but without rebound tenderness or muscle guarding. There is wall thickening (black arrowhead) by submucosal edema in Fig.1-Fig.6 and black arrow of Fig.2-Fig.5 that extends to posterior wall of stomach from gastric angle is an acute ulcerative lesion. He did not respond to conservative therapy, and partial gastrectomy was performed (Fig.B).