Duodenal stenosis resulting from a preduodenal portal vein and an operation for scoliosis

Figure 1 Images at admission. A: Plain X-ray film. Although the spine was corrected by a previous orthopedic operation, a severe scoliosis with right side protrusion was found at admission; B: Abdominal CT scan. The preduodenal portal vein (PDPV) was found to be located in the anterior side of the duodenum; C: Contrast study of the upper gastrointestinal tract. A contrast study of the duodenum showed a stenosis ranging from the second to third portions. In addition, the contents flowed to both the dilated main pancreatic duct and common bile duct.