Clinical characteristics of adult-type annular pancreas: A case report

Figure 1 Computed tomography images of the duodenum in annular pancreas patients. A: Orange arrows show dilated duodenum; B-D: White arrows show annular pancreas, and orange arrows show narrowed duodenum; E: Orange arrow shows that the duodenal wall is thick, suggesting a tumor.

Figure 2 Double bubble sign in computed tomography images. A: Orange arrows show dilatation of the duodenum, stomach, and common bile duct; B-E: Orange arrows show annular pancreas; F: Orange arrow shows annular pancreas, and white arrow shows narrowed duodenum.

Figure 3 Incomplete annular pancreas. A: Orange arrow shows narrowed duodenum; B: Orange arrow shows annular pancreas.

Figure 4 Annular pancreas gradually wraps around the duodenum. A-C: Orange arrows show dilatation of the common bile duct; D and E: White arrows shows narrowed duodenum; F: Orange arrows show dilatation of the common bile duct; C-E: Yellow arrows show annular pancreas.

Figure 5 Stenosis of the end of the common bile duct. A: Orange arrow shows choledochal strictured end; B and C: Orange arrows show the incomplete annular pancreas.