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. Author manuscript; available in PMC: 2019 Sep 1.
Published in final edited form as: Gastroenterol Clin North Am. 2018 Jun 29;47(3):515–536. doi: 10.1016/j.gtc.2018.04.004

Figure 3. Malignant right-sided polyp in ascending colon missed at initial colonoscopic evaluation.

Figure 3

Three-dimensional colon map (right) shows the location of a large polyp in the ascending colon at CTC; 3D endoluminal CTC view shows the large polypoid lesion on or adjacent to a fold. This patient was enrolled in the DoD CTC screening trial. This polyp was not found at initial colonoscopy immediately following CTC. However, after segmental unblinding of the CTC results, the polyp was eventually found after several attempts to reposition the instrument because of repeated slippage in this region. Invasive adenocarcinoma was confirmed at surgery.

From Pickhardt PJ, Nugent PA, Mysliwiec PA, et al. Location of adenomas missed by optical colonoscopy. Annals of Internal Medicine 2004;141:352-9; with permission.