Imaging findings of lupus enteritis. Panel A: Edematous small-bowel wall (ileum) with the characteristic target sign (abnormal bowel-wall thickening and enhancement) and ascites. Panel B: Small bowel distention with engorgement of mesenteric vessels and ascites. Panel C. Edematous ileum wall with engorgement of mesenteric vessels and increased number of visible vessels (comb’s sign). Panel D: Bowel-wall thickening and enhancement (target sign). All the above described abnormalities are non-specific and can also be seen in patients with pancreatitis, mechanical bowel obstruction, peritonitis, or inflammatory bowel disease, all of which may mimic intestinal ischemia.