Figure 4. Unblinded 7-mm tubular adenoma located in the distal rectum.Left. Three-dimensional endoluminal view from virtual colonoscopy that simulates retroflexed view of rectal ampulla shows a subtle flat lesion (arrow) that measured 7 cm from the anal verge. Note the tip of small rectal catheter (arrowhead) that was used for air insufflation. Right. Two-dimensional axial computed tomography image with soft tissue windowing confirms the presence of a flat rectal lesion (arrow).

Return to article