Figure 2. Unblinded 6-mm tubular adenoma located on the proximal aspect of a fold at the hepatic flexure.Left. Three-dimensional endoluminal view from virtual colonoscopy shows a sessile polyp situated on the backside of a colonic fold. Right. Digital photograph from optical colonoscopy shows the same polyp, which was found after segmental unblinding of the virtual colonoscopy results. Note the adjacent calibrated guidewire used for polyp measurement in the study.

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