Diverticulitis CT

	Diverticulitis Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Cafer Zorkun, M.D., Ph.D. [2]

Overview

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.