What is a colonoscopy? - Colonoscopy Show
In this video, a nurse explains what happens during a colonoscopy. Media last reviewed: 25 November 2019 You're usually awake during a colonoscopy. You'll be offered medicine to make you more comfortable
and make the test easier. Page last reviewed: 07 June 2019 A colonoscopy can be done to look for a number of things. A colonoscopy is often done to check what's causing your bowel symptoms, such as: Most of the time
it will not find anything to worry about. But sometimes it might find something that needs a closer look or further testing. Lots of people have growths in their bowels, and most of the time they're harmless. But they can sometimes become cancer, so if they're found they need to be checked. They can be removed during the colonoscopy and tested. Your results will tell you if you need any further tests or
treatment. A colonoscopy can be used to look for bowel conditions like: These conditions can be hard to diagnose, so you may also have other tests. Information: You can get more information and support from: Page last reviewed: 07 June 2019 Recent Blog ArticlesOctober 14, 2020
Colon cancer is among the most common – and preventable – cancers: about 140,000 people are diagnosed with colon cancer each year in the US and more than 50,000 people die of the disease annually. This makes it the 2nd leading cause of cancer-related death in the US. So, you should be familiar with colonoscopy (if you aren't already). That's the test during which a doctor places a flexible tube through the rectum into the colon to look for polyps, tumors or other problems. As awful as it may sound, it's usually well-tolerated: you're sedated for the procedure and often people don't even remember having it. We're lucky to have such a good screening test for colon cancer - colonoscopy can not only detect tumors while they're curable, but it can identify precancerous polyps which can be removed before they become cancerous. For people at average risk of colon cancer, colonoscopy is usually recommended as a screening test at age 50 (or age 45, according to the American Cancer Society). It should be repeated every 10 years thereafter until age 75. It is often recommended for younger people or more frequently for those who notice blood in their stool, have unexplained anemia or a change in bowel habits, have a strong family history of colon cancer or other risk factors for the disease. While the test does come with some risks (such as pain, bleeding or even perforation), serious complications are quite rare. Despite the compelling evidence of the benefits and low risk of the procedure, only 2/3 of eligible adults in the US have the test. What will you learn?Much is written about "the prep" for colonoscopy (to clean out the colon so that its interior can be clearly viewed) and the procedure itself, but less is written about what the results may mean. As a screening test, it's usually done to find colon cancer or precancerous polyps. But, often neither is found; instead, other, potentially confusing or surprising findings may be discovered. Here's a primer on what your colonoscopy may reveal:
While small polyps can often be removed during colonoscopy, larger ones may require surgery. Risk factors for colon polyps are similar to those for colon cancer, including advanced age, family history of polyps or cancer, a diet high in red meat, or a history of inflammatory bowel disease.
Other, less common findings include a "foreign body" (such as when a child swallows a toy) or a fistula (an abnormal connection between the colon and another part of the intestinal tract or other organ). When are the results available?Some of the findings of a colonoscopy are known right away. For example, if everything appears normal and no biopsies are taken, the doctor can tell you right away that the colonoscopy was normal. If a polyp is removed or a sample of the colon lining is removed (a colonic biopsy), it may take a few days (or more) to find out that cancer, an adenoma or another finding was discovered. Since a sedative is usually given before a colonoscopy, results may be provided in writing and discussed later, when you're more awake and alert. The bottom lineIf your doctor recommends a colonoscopy, talk about the risks and benefits of the test, how to prepare for it, how it's done and what the results may mean. While other tests are available to screen for colon cancer, they have significant limitations compared with colonoscopy. The vast majority of people who have colonoscopy say that worrying about it and taking the laxatives beforehand are the worst parts. Considering all of the information this test can provide and how it can actually prevent colon cancer (by removal of precancerous polyps), it's among the very best screening tests we have. Disclaimer:As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician. Related ContentFree Healthbeat SignupGet the latest in health news delivered to your inbox! What are the most common findings of a colonoscopy?Results Colonoscopy. Normal results. This means no growths (polyps) or cancer have been found in your bowel. ... . Growths (polyps) Your results may show they found and removed growths (polyps). ... . Bowel cancer. ... . A bowel condition that's not cancer.. What is visible during colonoscopy?During a colonoscopy procedure, your doctor uses a camera attached to a long tube to visually examine the lining of your colon for growths, inflammation and sores. Based on what they find, they may take a biopsy that's sent to a lab for testing.
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