Fig. 2. 55-year-old man without underlying disease (patient #6).

A, B. Coronal and axial images from reformatted CT scan performed at time of diagnosis (with ischemic bowel disease) show thickening of wall of ileum with decreased enhancement, which is consistent with venous ischemia (arrow in A); inferior mesenteric vein thrombosis is also noted (arrowheads in B). Patient had abdominal pain at that time, and vital parameters were stable. Patient underwent anticoagulation therapy with Heparin. C. Coronal images from contrast-enhanced CT obtained when patient had abdominal pain, fourteen days after ischemic event. Post-ischemic stricture with concentric wall thickening and higher enhancement in portal phase than arterial phase (moderate mucosal enhancement in arterial phase and moderate layered enhancement in portal phase) (arrows) was identified. D. Small bowel series reveals fold effacement at site of stricture (arrows). Patient underwent small bowel resection and anastomosis. E. Gross specimen of resected large bowel reveals approximately four centimeters long segmental stricture (arrows) with dilatation of proximal bowel segment, which corresponds with CT image findings (arrow in C). F. Low power magnification shows ulceration (arrows) and dilatation of submucosal venules and capillaries (arrowheads) (original magnification, × 12.5) G. Mucosa shows ulceration (arrows) and crypt distortion of residual epithelial cells (arrowheads) (× 40).