How is CT scanning used to differentiate intestinal ischemia from intramural hemorrhage in lower gastrointestinal (GI) bleeding (LGIB)?

Updated: Jul 26, 2019
  • Author: Burt Cagir, MD, FACS; Chief Editor: BS Anand, MD  more...
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Answer

Macari et al assessed the ability of computed tomography (CT) scanning to differentiate between intestinal ischemia and intramural hemorrhage and found that although some of the CT features overlap, ischemia typically involves a long segment with wall thickening of less than 1 cm, whereas intramural hemorrhage typically involves a short segment with wall thickening of 1 cm or greater. [29] The diagnosis was confirmed by laboratory findings, clinical parameters, and follow-up examinations, or at surgery.


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