Abstract
One hundred and twenty two cases with presumed hyperplastic polyp were followedor periods of five years to nineteen years and six months, with an average of seven years and ten months. The follow-up studies of the gastric polyps were made by radiological, gastroendoscopic and bioptic examinations.The results obtained were as follows : Among them, morphologic alterations of polyps had been observed in eighty seven cases (71.3%). 1. Length of polyp increased gradually in thirty three cases. 2. Diameter of polyp increased in forty four cases. 3. Twenty one cases had a decrease in its size, some of them spontaneously disappeared during the course of follow-up. 4. Twenty cases had an increase in its number. 5. Malignant transformation of gastric polyp was present in one case only. Therefore, the possibility of the transformation into gastric cancer seems to be very small. However, a coexisting gastric cancer was present in six cases. In conclusion, many cases with gastric hyperplastic polyp should also be followed carefully for the possibility of a coexisting carcinoma.
