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.)
Click on image to view larger version.

Fig. 4D. —Polyp behind fold in 67-year-old man with initially negative findings on colonscopy. Follow-up colonoscopic image confirms 12-mm polyp (arrow) in sigmoid colon. Histologic analysis revealed villous adenoma. Even large polyps like this can be missed at endoscopy if obscured by large haustral fold.