Figure 23b. Mesenteric tear. (a) Precontrast CT scan shows a convex, high-attenuation mass (arrows) within the SBM, which represents a mesenteric hematoma. The irregular areas of increased attenuation (arrowheads) in the root of the SBM represent a mesenteric tear with small areas of hemorrhage. (b) Surgical photograph shows the mesenteric tear (arrows), which runs from the root of the SBM to the mesenteric border.