Colonoscopy

During a colonoscopy, a long, flexible tube called a colonoscope is inserted into your rectum. A tiny video camera at the tip of the tube allows the doctor to view the inside of the entire colon and rectum. During a colonoscopy, the doctor also can collect tissue samples and remove polyps through the scope.

Colonoscopy is considered the gold standard for colon cancer screening, and there are few risks associated with the procedure. When sedation is used, patients have little or no recollection of the exam.

Watch the video on how a colonoscopy is performed:

Colonoscopies have a poor reputation for having an uncomfortable preparation phase. However, several options can make this process tolerable. Be sure to talk with your provider about which options are best for you and your situation.

Cologuard DNA Stool Test

One newer method of detection is a stool DNA test called Cologuard. This test offers people 50 and older who are at average risk for colorectal cancer an easy-to-use screening test that they can complete in the privacy of their own home. A sample of your stool will be taken to look for blood or DNA changes in cells that suggest the presence of colorectal cancer or precancerous conditions.

This test is safe and poses no risk. However, it is less sensitive than colonoscopy at finding precancerous polyps. One or 2 of every 20 people who undergo stool DNA testing will have a positive result, but no cancer or polyps will be found during a follow-up colonoscopy.

Visit the Cologuard website.