human
My doctor wants me to get a colonoscopy. What is that, and what should I expect?
assistant
A colonoscopy is an examination of the large intestine. It involves inserting a flexible tube with a camera on the end into the rectum, which allows your doctor to see inside your colon. The procedure usually takes about 30 minutes. You may be given sedatives or pain medication before the exam. During the exam, you will likely feel some discomfort, but it should not be severe. After the exam, you can go home.