News tagged with colonoscopy
National screening benchmarks for finding polyps during a colonoscopy might be too low
Current national guidelines provide benchmarks regarding the number of polyps physicians should detect, on average, during a colonoscopy. Recent studies at Mayo Clinic's campus in Florida suggest these benchmarks may be too ...
Cancer
Feb 19, 2013 |
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Brief class on easy-to-miss precancerous polyps ups detection, study shows
Most people know a colonoscopy requires some preparation by the patient. Now, a Mayo Clinic physician suggests an additional step to lower the risk of colorectal cancer: Ask for your doctor's success rate detecting easy-to-miss ...
Diseases, Conditions, Syndromes
Jan 08, 2013 |
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Vaccine triggers immunity to prevent colon cancer
(Medical Xpress)—A first-of-its-kind vaccine developed by University of Pittsburgh Cancer Institute (UPCI) researchers successfully prompted the immune system to respond to early indications of colon cancer in people at ...
Cancer
Jan 08, 2013 |
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Rare genetic faults identified in families with bowel cancer
(Medical Xpress)—Rare DNA faults in two genes have been strongly linked to bowel cancer by Oxford University researchers, who sequenced the genomes of people from families with a strong history of developing ...
Cancer
Dec 24, 2012 |
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New prep for colon screen uses four pills, not liquid laxative
(HealthDay)—Prepping for a "virtual colonoscopy" at the Mayo Clinic now only involves swallowing four cleansing tablets, rather than the large amounts of liquid laxative typically required, researchers ...
Cancer
Aug 31, 2012 |
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Middle-aged diabetics may need earlier colon checks
(HealthDay) -- Researchers who say they've linked type 2 diabetes with earlier development of precancerous colon lesions recommend people with the blood sugar disorder start colorectal screenings at a younger ...
Diabetes
May 22, 2012 |
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Study: Simple scope exam cuts colon cancer deaths
A simple, cheaper exam of just the lower part of the bowel can cut the risk of developing colon cancer or dying of the disease, a large federal study finds.
Cancer
May 21, 2012 |
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Noninvasive stool test for colorectal cancer unaffected by variables
A study presented today by Mayo Clinic researchers at the American Association for Cancer Research (AACR) Annual Meeting 2012 in Chicago identified two genes that are optimal targets to be analyzed in a new noninvasive test ...
Cancer
Apr 03, 2012 |
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CT colonography shown to be comparable to standard colonoscopy
Computerized tomographic (CT) colonography (CTC), also known as virtual colonoscopy, is comparable to standard colonoscopy in its ability to accurately detect cancer and precancerous polyps in people ages 65 and older, according ...
Cancer
Feb 23, 2012 |
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Study: Screening new colon cancer patients for Lynch syndrome cost-effective
Screening every new colon cancer patient for a particular familial disorder extends lives at a reasonable cost, say Stanford University School of Medicine researchers. The team hopes the results will encourage more medical ...
Cancer
Jul 18, 2011 |
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Blood test for colon cancer screening beneficial for some seniors, but not for many others
A new study of U.S. veterans ages 70 and older finds that the healthiest get the most benefit from current colon cancer screening methods. However, for many less healthy veterans the burdens of screening may outweigh the ...
Cancer
May 09, 2011 |
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Open-access colonoscopy is safe: study
Nurse-driven, open-access colonoscopy programs are as effective and safe as colonoscopy following a consultation with a gastroenterologist, according to researchers at Henry Ford Hospital.
Cancer
May 09, 2011 |
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A less painful colonoscopy: Researchers could have answer to problem known as 'looping'
Colonoscopy is regarded as the most thorough way to screen for colon cancer but the potentially life-saving procedure can also be painful. Scientists and engineers are continually researching new methods of screening to reduce ...
Other
Apr 27, 2011 |
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Study finds gaps in 'decision aids' designed to help determine right cancer screening option
When it comes to a cancer diagnosis, timing can be everything – the sooner it's found, the more treatable it is. But when and how often should someone get screened?
Cancer
May 10, 2013 |
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One in four colonoscopies in Medicare patients found to be potentially inappropriate
Colonoscopy is one of the most effective cancer screening procedures available. Colon cancer grows very slowly and can be treated if caught early through screening. But, perhaps because of this success, older Americans are ...
Cancer
Mar 13, 2013 |
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Colonoscopy
Colonoscopy is the endoscopic examination of the large colon and the distal part of the small bowel with a CCD camera or a fiber optic camera on a flexible tube passed through the anus. It may provide a visual diagnosis (e.g. ulceration, polyps) and grants the opportunity for biopsy or removal of suspected lesions.
Virtual colonoscopy, which uses 2D and 3D imagery reconstructed from computed tomography (CT) scans or from nuclear magnetic resonance (MR) scans, is also possible, as a totally non-invasive medical test, although it is not standard and still under investigation regarding its diagnostic abilities. Furthermore, virtual colonoscopy does not allow for therapeutic maneuvers such as polyp/tumor removal or biopsy nor visualization of lesions smaller than 5 millimeters. If a growth or polyp is detected using CT colonography, a standard colonoscopy would still need to be performed.
Colonoscopy can remove polyps as small as one millimeter or less. Once polyps are removed, they can be studied with the aid of a microscope to determine if they are precancerous or not.
Colonoscopy is similar to but not the same as sigmoidoscopy, the difference being related to which parts of the colon each can examine. While colonoscopy allows an examination of the entire colon (measuring four to five feet in length), sigmoidoscopy allows doctors to view only the final two feet of the colon. A sigmoidoscopy is often used as a screening procedure for a full colonoscopy, in many instances in conjunction with a fecal occult blood test (FOBT), which can detect the formation of cancerous cells throughout the colon. Other times, a sigmoidoscopy is preferred to a full colonoscopy in patients having an active flare of ulcerative colitis or Crohn's disease to avoid perforation of the colon. Additionally, surgeons have lately been using the term pouchoscopy to refer to a colonoscopy of the ileo-anal pouch.
For more information about Colonoscopy, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
