human
My doctor says I need a colonoscopy. How does it work?
assistant
A colonoscopy is an endoscopic procedure that allows your doctor to view the inside of your colon. It uses a thin, flexible tube called an endoscope to look at the walls of your colon and remove any polyps or other abnormal growths found there. During the procedure, you will be sedated and given oxygen so that you do not feel any pain. The entire procedure usually takes about 30 minutes.