Which nonspecific findings may affect the accuracy of CT in the diagnosis of ulcerative colitis (UC)?

Updated: Feb 23, 2019
  • Author: Ali Nawaz Khan, MBBS, FRCS, FRCP, FRCR; Chief Editor: Eugene C Lin, MD  more...
  • Print
Answer

Answer

Bowel thickening is a nonspecific finding; it may be encountered in a variety of colitides and other pathologies of the bowel wall. The target sign is also nonspecific; it has been reported in Crohn colitis. Mucosal ulceration is difficult to detect with CT.

The target sign may be secondary to a hypoattenuating submucosal layer of fluid (nonspecific) or fat (chronic in origin and usually from IBD). Also, there is evidence that submucosal fat may be a normal variant.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!