human
My doctor wants me to get a colonoscopy. How does that work?
assistant
A colonoscopy is a procedure in which a doctor uses an endoscope (a long, flexible tube) to examine the inside of your colon. The doctor inserts the endoscope into your rectum and slowly moves it through your colon. The doctor can then use the endoscope to take pictures of the inside of your colon and remove any suspicious growths or polyps.