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Submucosal tumors on gastric fundus diagnosed in preoperative examinations. A: A lesion near to ECJ with a clear-cut margin shown in barium swallow examination of upper gastrointestine; B: A lesion with a clear-cut margin protruded into gastric lumen shown in ultrasonic gastroscopy; C: A hemisphere-like projection in the posterior wall of gastric fundus and an ulcer in its center shown in gastroscopy.
