human
I've been told that I need to have a colonoscopy. What is it and why is it necessary?
assistant
A colonoscopy is a procedure used to examine the inside of your colon. It involves inserting a thin, flexible tube called a colonoscope into your rectum and then slowly moving it through the entire length of your colon. The purpose of this examination is to detect any abnormalities in the colon, such as polyps or cancerous growths.