PMC3318266_01
Colonoscopy findings showed a stenotic tumor in the ascending colon. The lesion was irregular and circumferential.
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fig1
Contrast enema showed a long irregular stenotic lesion of the ascending colon.
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fig2
Transverse (a) and coronal, (b) CT images of the abdomen. Circumferential and irregular thickening of ascending colon miming a malignancy.
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fig3
Abdominal computed tomography (CT) revealed a long stenotic tumor of the ascending colon extended 8 cm of length reducing notably the colonic lumen and associated with an infiltration of the adjacent fat tissues (Figure 3).
Noncaseating epithelioid granuloma (arrows) and multinucleated giant cells in the colonic submucosa with overlying normal colonic mucosa (hematoxylin and eosin, x100).
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fig4
In microscopic exam, the submucosa showed follicular structure with central epitheloid, giant cells, and surrounding fibroblasts (Figure 4).