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. 2018 Feb 12;6(3):210–214. doi: 10.1093/gastro/goy003

Figure 1.

Figure 1.

A patient who underwent optical colonoscopy was found to have an obstructing T4 tumor in the sigmoid colon. A CT colonography that was performed to rule out synchronous tumors proximal to the obstructing tumor showed a synchronous tumor in the hepatic flexure. Based on this information, a subtotal colectomy was performed. Surgery confirmed the presence of a synchronous tumor in the hepatic flexure.