Figure 1. (A) Computed tomography (CT) examination with contrast medium. Coronal reformat shows a large mass in the mesenteric fat is demonstrated at the site of the obstruction on the right side, and the mass causes the change of bowel caliber (arrow). The mass is well-defined, spiculated, and hyperattenuating, compared with the adjacent mesenteric fat, and slightly inhomogeneous with some calcifications. (B) Computed tomography (CT) examination with contrast medium. Axial reformat in the portal venous phase demonstrates signs of small bowel obstruction with multiple dilated bowel loops. The mesenteric mass displaces the surrounding strictures and causes occlusion of the superior mesenteric vein branches (not shown), with extensive small mesenteric and bowel wall varices (arrow).