Search the site for providers, locations, and content.
Main Menu
Definition
Colonoscopy: Overview
Colonoscopy: OverviewA colonoscopy is a test that lets your doctor look all the way inside your large intestine, also called your colon.It uses a thin, flexible tube called a colonoscope.The scope has a tiny light and video camera on the end and is connected to a computer screen. Acolonoscopy is one of a few tests used to screen for colon cancer. A doctor may be able to find cancer early orfind colon polyps.A polyp is a small growth of excess tissue. Some types of colon polyps can lead to cancer. The test can alsobe used to find the cause of problems like diarrhea, intestinal or rectal bleeding, or belly pain. But before thetest can be done, you have a really important job to do.You need to clean out your colon. This is usually called colon prep. Be sure to follow your doctor's instructions.If you don't do a good job preparing your colon, the test may not be good enough. And you may have to do itall over again.Here's how the test is done. Just before the test, you'll be given a medicine that will make you sleepy and helpwith any discomfort. Because of the medicine, you probably won't remember what happens during the test,and you'll need to make sure you have someone to take you home once the test is done.During the test you'll lie on your side with your knees pulled up. Your doctor will gently put a gloved finger intoyour anus and then gently slide the colonoscope into your anus so it can be moved slowly through all the partsof your colon.Your doctor may take tissue samples or remove some polyps during the test. The test usually takes less thanan hour.This program is for informational purposes only. Publisher disclaims all guarantees regarding the accuracy, completeness,or suitability of this video for medical decision making. For all health related issues please contact your healthcare provider.© The Wellness Network
Featured in
Book or manage appointments, urgent care and lab services.
Watch this to know how you can prepare at home before surgery.
Watch this video to learn about treatment options for stroke prevention when you have a narrowed carotid artery.
Watch this video to learn how to safely recover from hip replacement surgery.
Watch this video to learn about total hip replacement surgery.