- When distended, normal colonic wall should be less than 3 mm or even imperceptible
- Fecal contents, fluid or colonic redundancy make true wall measurement difficult or impossible
Pseudothickening of Colonic Wall
- Could be mistaken for true pathology such as annular neoplasm or inflammatory stenosis
- Pseudothickening should be mild. Its margin should gradually return to full distention
- Normal pericolonic fat
Mang T et al. Pitfalls in multi-detector row CT colonography: a systematic approach.. Radiographics 2007;27:431.
Macari M, Balthazar EJ. CT of bowel wall thickening significance and pitfalls of interpretation. AJR 2001;176:1105.