Presentation
Left-sided lower abdominal pain and tenderness.
Patient Data
Multiple diverticula in the sigmoid loop are associated with wall thickening and enhancement and marked stranding of the adjacent fat tissues. A small, pericolic fluid collection, with peripheral contrast enhancement, is also seen in the proximal portion of the sigmoid, suggesting initial abscess formation.
The gall bladder is not seen.
Case Discussion
Acute diverticulitis is a colonic and pericolonic inflammatory condition, caused by obstruction of the diverticulum neck by fecal material and subsequent inflammation. The most common CT findings are pericolic fat stranding and bowel wall thickening with enhancement.
Imaging findings of complicated diverticulitis in the CT, represented by extraluminal liquid or gas, suggesting perforation, abscess, and/or fistula formation.
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