Cornell University Program of Computer Graphics The term computer graphics includes almost everything on computers that is not text or sound. Today almost every computer can do some graphics, and people have even come to expect to control their computer through icons and pictures rather than just by typing.
Anal fistula. An anal fistula is a small channel that can develop between the end of the bowel and the skin near the anus. An anal fistula can cause bleeding and discharge when passing stools-and can be painful. An anal fistula can occur after surgery to drain an anal abscess. In some cases, an anal fistula causes persistent drainage. In other cases, where the outside of the channel opening closes, the result may be recurrent anal abscesses. The only cure for an anal fistula is surgery.
A white mucinous exudate is observed emanating from the site of a colovesical fistula in a patient with both a sigmoid diverticular abscess and colon cancer. After a bladder wash-out, the fistula appears as a raised, edematous, sessile lesion in the bladder.