[Clinico-pathologic study of gastric adenoma]

212 cases (226 foci) of gastric adenoma diagnosed by endoscopic biopsy in the past 25 years (1962-1987) in the Tokyo Medical College are reported. Of these lesions, 145 cases (147 foci) were biopsied once and 67 cases (79 foci) were biopsied more than twice. Fourty-seven cases (56 foci) as examined by an average of 3.3 gastroscopies were followed for an average of 19 months. The results showed that plaque-like and semispherical lesions were commonly seen in the A and M areas and the lesser curvature. Most of them appeared grayish but occasionally reddish in color. After follow-up of 2 years, 3 cases (4 foci) had undergone morphologic changes. The probability of cancerous degeneration ranged from 5.8% to 33.3%.