News tagged with colonoscopy
Study examines quality of colonoscopy reporting and performance
Researchers in the Netherlands assessed the quality of colonoscopy reporting in daily clinical practice and evaluated the quality of colonoscopy performance. They found that colonoscopy reporting varied significantly in clinical ...
Jan 23, 2012 |
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New test offers greater accuracy in early detection of colorectal cancer
Results of two studies suggest that a new, investigational colorectal cancer screening test developed in a collaboration between Mayo Clinic and Exact Sciences Inc. of Madison, Wis., is highly accurate and significantly more ...
Jan 19, 2012 |
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Preventive care: It's free, except when it's not
(AP) -- Bill Dunphy thought his colonoscopy would be free.
Dec 28, 2011 |
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Racial disparities in colon cancer screening persist despite insurance, access
Public health researchers have long attributed the disparity in colonoscopy rates between whites and minorities to a lack of health insurance or access to doctors. Now, a new study suggests the reasons for ...
Dec 12, 2011 |
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Bowel Cancer Screening Programme announces first results
The Bowel Cancer Screening Programme in England is on track to cut bowel cancer deaths by its target of 16%, reveals an analysis of the first one million test results, published in Gut.
Dec 08, 2011 |
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Colon cancer screening campaign erases racial, gender gaps in use of colonoscopy
Since the 1970s, U.S. mortality rates due to colorectal cancer have declined overall, yet among blacks and Hispanics, the death rates rose. Evidence suggests that underuse of colonoscopy screening among these groups is one ...
Nov 18, 2011 |
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Fecal occult blood testing effective in colonoscopy screenings
Fecal immunochemical testing (FIT) is more effective in its health benefits at the same or lower costs compared to guaiac fecal occult blood testing (gFOBT) at all levels of colonoscopy capacity, according to a study published ...
Nov 09, 2011 |
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Physicians who play Mozart while performing colonoscopy may improve adenoma detection rate
Physicians who listen to Mozart while performing colonoscopy may increase their detection rates of precancerous polyps, according to the results of a new study unveiled today at the American College of Gastroenterology's ...
Oct 31, 2011 |
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Short training course significantly improves detection of precancerous polyps
Just two extra hours of focused training significantly increased the ability of physicians to find potentially precancerous polyps, known as adenomas, in the colon, according to researchers at Mayo Clinic in Florida. These ...
Oct 31, 2011 |
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Cheaper and easier isn't necessarily better in new colon cancer screening procedures
Eventually, colon cancers bleed and so tests for blood in stool seem an inexpensive and noninvasive alternative to traditional colonoscopies. In fact, a recent article in the journal Cancer Prevention Research showed that f ...
Oct 20, 2011 |
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Study examines whether age for initial screening colonoscopy should be different for men, women
An analysis of results of more than 40,000 screening colonoscopies finds that men have a higher rate of advanced tumors compared to women in all age groups examined, suggesting that the age that individuals should undergo ...
Sep 27, 2011 |
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Single flexible sigmoidoscopy screening associated with reduced colorectal cancer
A single flexible sigmoidoscopy screening between the ages of 55-64 years is associated with a lower level of colorectal cancer (CRC) incidence and mortality, according to a study published online August 18 in the Journal of ...
Aug 18, 2011 |
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Use of a retroflexion technique during colonoscopy in the right side of the colon improves polyp detection
A new study from researchers in Indiana reports that use of a retroflexion technique in the right side of the colon during colonoscopy is safe and results in the detection of additional adenomatous (precancerous) polyps in ...
Aug 04, 2011 |
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Noninvasive fecal occult blood test effective screen for lower GI tract lesions
The immunochemical fecal occult blood test (iFOBT) is effective for predicting lesions in the lower intestine but not in the upper gastrointestinal (GI) tract, confirms a study in CMAJ (Canadian Medical Association Journal). ...
Aug 02, 2011 |
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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 ...
Jul 18, 2011 |
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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.
