抄録
A 64-year-old man came to our hospital with a chief complaint of epigastralgia and palpitation. Upper gastrointestinal bleeding was presumed to be the cause of severe anemia and tarry stools. By emergent endscopic examination, a large submucosal tumor was revealed at the lesser curvature on the anterior wall of the stomach with a protruding lesion seen on the top, and gastric ulcer was also seen at anal side of submucosal tumor. From CT, US and MRI examination, it was suspected to be a gastric lipoma. But there was not detected such a lesion in endscopic examination at two years ago in our hospital, we could not deny the possibility of malignancy for its rapid growth. It was subsequently resected in open surgery. In operation the protruding lesion had changed to a delle. Histological findings showed that the tumor was a gastric lipoma composed of mature adipose tissue. Sometime, delle is formed on submucosal tumor. But we experienced a rare case of gastric lipoma that formed a protruding lesion on the surface.
