PMC5340720_01
Sagittal computed tomography of the large bowel showing extensive thickening of the distal descending colon with necrotic lymph nodes (arrow).
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F1
Abdominal computed tomography revealed extensive concentric irregular thickening of the descending and sigmoid colon with multiple pericolonic lymph nodes and a 3.8 x 2.4 cm mass abutting the inferior mesenteric artery concerning for neoplastic disease (Figure 1).
Colonoscopy showing (A) rectosigmoid polyposis and (B) a partially obstructing mass in the descending colon.
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F2
Colonoscopy revealed a fungating, partially obstructing mass in the descending colon that could not be traversed and 17 polyps (5-30 mm in size) in the rectosigmoid and descending colon (Figure 2).