Most of the small bowel is dilated with a transition point in the lower abdomen with swirling of the mesenteric vessels. The terminal 30 cm of small bowel is collapsed. There is poor enhancement of the wall of much of the small bowel, with gas in the submuscosa. Gas is also seen in the mesenteric venous system with extensive liver portal venous gas. Whilst there is extensive atheromatous disease, the major vessels enhance normally.