Colon
{htmlfix}<a href="http://www.flickr.com/photos/79590401@N06/7166832750/" title="Polyp, Large Bleeding by LAENDO2, on Flickr"><img src="http://farm8.staticflickr.com/7229/7166832750_bc0bdefdbf.jpg" width="464" height="452" alt="Polyp, Large Bleeding"></a>{/htmlfix}
A large 3cm sessile polyp that is bleeding spontaneously (12 o'clock) in the upper rectum. Pathology was consistent with a villotubular adenoma.