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[edit] Discussion

  • Diverticulitis is defined as an inflammation of one or more diverticula.
  • Disease is frequently mild when pericolic fat and mesentery wall-off a small perforation.
  • More extensive disease leads to abscess formation.
    • Fistulae to adjacent organs and the skin may develop in the presence of an abscess.
    • The most common fistula is colovesicular in men.

[edit] Imaging Findings

[edit] CT

  • Colonic and paracolic inflammation in the presence of underlying diverticula (diverticula are identified on CT scans as outpouchings of the colonic wall).
  • Symmetric thickening of the colonic of approximately 4-5 mm is common.
  • Enhancement of the colonic wall is commonly noted. This usually has inner and outer high-attenuation layers, with a thick middle layer of low attenuation.
  • Free diverticular perforation results in the extravasation of air and fluid into the pelvis and peritoneal cavity.
  • Air in the bladder in the presence of a nearby segment of diverticulitis is suggestive of a colovesical fistula.

[edit] Images

Patient #1: CT images demonstrate diverticulitis

Patient #2: CT images demonstrate a diverticular abscess

[edit] See Also

[edit] External Links

[edit] References