The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.

You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)

Fig. 2A. —40-year-old male with colonoscopy-confirmed rectal mass. Axial source image obtained during CT colonography before digital processing shows uniform opacification of colon. Partially obscured mass (white arrow) and native haustral fold (black arrow) are indicated.