Fig. 13
From: Part 2: CT characterisation of pancreatic neoplasm: tumour mimics
![Fig. 13](http://media.springernature.com/full/springer-static/image/art%3A10.1007%2Fs13244-011-0103-6/MediaObjects/13244_2011_103_Fig13_HTML.gif)
a Axial portal venous CT in a 22-year-old with a structure in the pancreatic head (long arrow) of similar density to the superior mesenteric vein (short arrow). b A coronal reformat shows this to be tubular (arrowhead) representing oral contrast agent within the second part of the duodenum in a patient with annular pancreas