Abstract
We observed enlarged-vascular fluoroscopic patterns which were frequently observed in the duodenal cap, and obtained the following results. 1) The vascular fluoroscopic patterns were greatly varied depending upon air volume, and visualized markedly by large amount of air. 2) When vascular fluoroscopic regions are observed by magnification, blood vessels were visualized in the intervillous spaces, but not visualized on the tip of the villus. 3) When air is gradually removed, intervillous spaces were also gradually narrowed, subsequently blood vessels were not visualized. On the contrary, when gradnally inflated again, intervillous spaces were gradually increased, subseqnently blood vessels were visualized again. 4) As for villous shape, blood vessels were easily observed in the finger shaped villus and there is a difficulty to visualize in the convoluted villus, and no tendency was noted between leaf shaped and ridge shaped villi 5) The vascular floroscopic patterns were not observed around and at lesions such as duodenal ulcer (including scar and ridge), duodenitis with hyperemic and erosive types. As mentioned above, it was considered that vascular fluoroscopic pattern is one of the normal findings without reflecting the existence of inflamnatory disease.
