Stercoral ulcer and perforation of the sigmoid colon
Past history of constipation. Now abdominal pain ? diverticulitis
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Large focal collection of faeces in the sigmoid without signs of obstruction or diverticular disease but with local wall thickening in the sigmoid and signs of a local perforation by way of free intraperitoneal gas (arrow).
Stercoral ulcer is thought to be an ischaemic phenomenon due to the pressure effect of a large, hard faecal bolus on the bowel wall, i.e. pressure necrosis. If prolonged and severe, the colon can perforate.
- 1.Patel VG, Kalakuntla V, Fortson JK et-al. Stercoral perforation of the sigmoid colon: report of a rare case and its possible association with nonsteroidal anti-inflammatory drugs. Am Surg. 2003;68 (1): 62-4. Pubmed citation