What Happens During a Colonoscopy?
A colonoscopy is an examination of your entire colon. For it, your doctor uses a small video camera that’s attached to a thin tube called a colonoscope. The camera sends images to a small TV screen, and your doctor can see if anything looks unusual. If your doctor finds a small polyp during the test, he or she can remove it and send it to a lab for testing to see if it is cancerous. The removal of tissue is called a biopsy. Your doctor will take a biopsy of a tumor, large polyp, or anything else abnormal that’s found.
