PMC3937564_01
Image depicting large fecal load, sigmoid wall thickening and extensive peri-colonic infiltrative change.
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CT scan of the abdomen and pelvis with oral and intravenous contrast showed abundant stool in the colon, particularly in the sigmoid colon with surrounding extensive infiltrative changes, wall thickening, and 6.5 cm dilation of the colon (Fig. 1).
Magnified image depicting a single focus of free air within the peritoneal cavity indicative of perforation. Peri-colonic infiltrative changes are also seen.
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There was sigmoid diverticulosis and multiple foci of extraluminal air (Fig. 2).
Hematoxylin and eosin staining of colonic biopsy specimen showing acute and chronic inflammation.
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Microscopic examination showed a perforation of the colonic wall with mucosal necrosis, acute and chronic inflammation and granulation tissue (Fig. 3).