Dilated stomach and proximal through mid small bowel. Rounded cluster of small bowel in the right lower quadrant with wall thickening and increased attenuation on noncontrast, diminished enhancement on arterial phase, present but diminished enhancement on portal venous phase. Interloop fluid associated with this cluster.
Fecalized small bowel leads into the first transition point into this cluster, crossing midline with abrupt narrowing. The cluster of thickened small bowel gradually tapers into normal caliber small bowel in the pelvis. If you continue to follow this segment for some length, it eventually exits the closed loop just inferior to the proximal transition point (best seen on coronal, see annotated).
Heavy atherosclerosis of the abdominal aorta. Patent mesenteric vasculature.