Lower gastrointestinal bleeding CT scan

Lower gastrointestinal bleeding Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aditya Ganti M.B.B.S. [2]

CT scan

• Helical CT scanning of the abdomen and pelvis can be used when a routine workup fails to determine the cause of active gastrointestinal (GI) bleeding.
• Multiple criteria/findings to diagnose lower gastrointestinal bleeding includes
  • Vascular extravasation of the contrast medium
  • Contrast enhancement of the bowel wall
  • Thickening of the bowel wall
  • Spontaneous hyperdensity of the peri-bowel fat, and vascular dilatations.