Figure 6b. Sclerosing mesenteritis. (a) Coronal volume-rendered image shows a soft-tissue mass (arrowheads) with calcification (white arrow) in the mesentery along the distribution of the superior mesenteric artery (black arrow). (b) On a sagittal volume-rendered image, the soft-tissue mass (arrowheads) encases the superior mesenteric artery (long arrow) in the root of the small bowel mesentery. Short arrow indicates the celiac axis.