Predilection site of duodenal injury

Duodenal diseases are most common is duodenitis, duodenal ulcer, preferably occurs in the duodenal bulb. Duodenal bulb is the beginning of the upper part of the duodenum, about 1- 2 cm long, this site and the pylorus of the stomach phase, duodenal bulb intestinal wall is relatively thin, relatively wide diameter. When gastric acid secretes from the duodenal bulb, it affects the intestinal mucosa, causing congestion and edema or even erosion of the intestinal mucosa, which is one of the reasons for duodenal ulcer. Therefore, if duodenal lesions are easy to occur, they can be found in the duodenal bulb by barium meal examination or abdominal CT scan.