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Figure 7b. Flat polyp. Three-dimensional (a) and axial 2D supine (b) CT colonographic images demonstrate an 8 x 2-mm flat polyp within the cecum (arrow). Flat polyps may be subtle on 3D images, often requiring verification on the 2D display. Endoscopy showed a 1 x 0.3-cm plaquelike lesion along the base of a cecal fold with minimal elevation.
