1981 Volume 23 Issue 5 Pages 703-707_1
A 56-year-old man was admitted to our hospital because of right pneumothorax. Xray examination of the stomach revealed a well-difined, small polypoid lesion with smooth surface in the gastric antrum. Endoscopic examination showed a semipedunculated polypoid tumor having glittering surface. The tumor was depressed, when it was touched by biopsy forceps, and was thought to be a small submucosal tumor of soft cosistency. So endoscopic polypectomy was performed for definitive diagnosis. The resected tumor, measuring 10×8×9 mm, was a monolocular submucosal cyst, histologically diagnosed as the simple retention cyst of Palmer or the glandular retention cyst of Nomura. Although gastric cysts are rare, some of them have been found endoscopically with the recent advent of endoscopic polypectomy.
