Fig. 3

Abdominal enhanced CT examination of eosinophilic DBU. (A,B) Thickening of the duodenal bulb (large arrow) and descending part (small arrow) in case 10, with improvement after treatment. (C) Thickening of the duodenal bulb (large arrow) in case 3. (D) Thickening of the duodenal bulb (large arrow) in case 18.