human
My doctor says that I need to get a colonoscopy done. What is a colonoscopy?
assistant
A colonoscopy is a procedure in which a doctor uses a flexible tube called a colonoscope to examine the inside of your colon. The doctor inserts the tube into your rectum and then slowly moves it through your colon, allowing him or her to take pictures of the walls of your colon and any polyps or other abnormalities.