In the last decade, there has been an increase in the number of technologies available for colorectal cancer screening, resulting in changing patterns of the use of different tests. The experts who analyzed the data to provide these new guidelines have added two new tests to the list of recommendations: stool DNA (sDNA) and CT colonography (CTC), also known as virtual colonoscopy.

The guidelines also make a significant distinction about tests used to screen for colorectal cancer by sorting the available tests into two major groups:

• Tests that are used to detect cancer early, and
• Tests that have the potential to prevent colorectal cancer by detecting precancerous polyps.

ACS Deputy Chief Medical Officer Dr. Len Lichtenfeld emphasized the importance of action. "The words in this report do have meaning, but they only exist on paper. To make them do something for you, you need to do something for yourself," he said. "I hope I live to see the day when everyone who needs to be screened for this disease takes advantage of that opportunity."

Your doctor should assist you in making an informed decision about the appropriate colorectal screening method by discussing the advantages, limitations, and risks of each test. Also understand that preferences and availability of resources, both financial and technological, play a role in which screening test is chosen. As Dr. Len says, "The best test for you is the one you get and the one you are most comfortable with."

The new guidelines were updated through a collaborative process between the American Cancer Society, the U.S. Multi Society Task Force on Colorectal Cancer, and the American College of Radiology. They represent the most current scientific evidence and expert opinions available and offer practical guidance and new options to help physicians and individuals make informed decisions about colorectal cancer screening.

For more information on the new screening guidelines, call 1-800-ACS-2345 or visit www.cancer.org.