1989 Volume 31 Issue 2 Pages 344-351
Endoscopic polypectomy of the stomach was performed for 581 lesions in 413 patients at our center during the past seven years, and among them 554 lesions in 387 patients were hyperplastic polyps which was equivalent to 95.4% of the all. We studied the endoscopic appearance and histopathological findings of focal cancers in hyperplastic polyps. The results were as follows. 1) There were twelve lesions of focal cancer in hyperplastic polyp, which is equiva-lent to 2.2% of hyperplastic polyps. 2) Histopathologically, there were 11 cases of foveolar type (Figure 1) and 1 case of intestinal type (Figure 2) of focal cancer in hyperplastic polyp. Focal cancers were found at the top of hyperplastic polyps and there were no cases of focal cancer with adenoma (Figure 3). 3) Endoscopically, the mucosal surface of these lesions appeared roughly granular and reddish in color. Most of them had white coat or mucus with bleeding. Some had depression on the surface. These findings may suggest the possibility of endoscopic diagnosis of focal cancer in hyperplastic polyp (Table 5), but it generally seems difficult to point out the presence of focal cancer in hyperplastic polyp from the endoscopic appearance.
