Figure 1. Gastroscopy and upper gastrointestinal radiography. (A) Gastric antrum mucosa showed more scarring, pale mucosa, rough and uneven surface, prepyloric cicatricial stenosis 6–7 mm in diameter, and the endoscope could not pass through. (B) Upper gastrointestinal radiography after drinking compound meglumine diatrizoate showed gastric filling was fishhook type, gastric mucosal folds were thickened and disordered, tension was reduced, peristalsis was slow, pyloric canal filling was poor, and contrast agent passed slowly.