抄録
The author found 88 cases with duodenal diverticulum among 2000 cases who received upper G. I, series This indicated that the incidence of duodenal diverticulum was 4.4% in our series. Analysis of the cases revealed that incidence in the cases below the age of fifty years was lower than the above, but 6.7% in the sixth decade, 13.6% in seventh decade and 21.4% in the eighth decade, showing sharp increase of incidence in higher age group. A prone position film with high voltage technique at the end of G. I, series may played the most important role in higher incidence of duodenal diverticulum in our series comparing with most of the other reports in our country.