PMC3906958_01
Abdominal enhanced computed tomography scan showing a large tumor in the sigmoid colon (arrow) and dilation of the colon and small intestine.
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F1
Abdominal enhanced computed tomography (CT) revealed thickening of the sigmoid colon and marked dilation of the proximal intestine from the ileum to the sigmoid colon (Figure 1).
Colonoscopy showing an obstructive tumor in the sigmoid colon.
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F2
Emergency colonoscopy showed an advanced colorectal carcinoma with severe and complete circumferential stenosis (Figure 2).
Macroscopic appearance of the resected intestine. Arrow indicates colon cancer, and arrow head indicates the ileocecal valve.
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F3
The bowel, from the sigmoid colon to 60 cm proximal to the terminal ileum, was totally necrotized (Figure 3). Normal mucosa was observed between the necrotic lesion and the tumor in the sigmoid colon, which was compatible with a diagnosis of obstructive colitis (Figure 3).