human
My doctor wants me to have a colonoscopy, what is a colonoscopy?
assistant
A colonoscopy is a procedure in which a doctor uses a thin, flexible tube called an endoscope to examine the inside of your colon. The doctor will insert the endoscope into the rectum and then slowly move it through the entire length of the colon. During the examination, the doctor may take samples of tissue or remove polyps if they are found.