human
I've been told I have to have a colonoscopy. What is this test?
assistant
A colonoscopy is an examination of the large intestine (colon) using a thin, flexible tube called a colonoscope. It allows doctors to look at the inside of your colon and remove any polyps or other growths that may be present. The procedure is done in a hospital or outpatient center, and usually takes about 30 minutes.