News tagged with colonoscopies

Low yield for repeat colonoscopy in some patients

(HealthDay)—Repeat colonoscopies within 10 years are of little benefit to patients who had no polyps found on adequate examination; however, repeat colonoscopies do benefit patients when the baseline examination was compromised, ...

Jul 28, 2014
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Colon cancer decreases but misconceptions remain

(Medical Xpress)—Recent reports have shown that colon cancer rates have fallen by 30 percent over the past decade, particularly in people over age 50, because of the effectiveness of colonoscopies and awareness efforts ...

Mar 27, 2014
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Bundled payments come to gastroenterology

Patients want physicians to provide high-quality care and the health system requires good value for physician work. To help gastroenterologists achieve these goals, the American Gastroenterological Association (AGA) has developed ...

Mar 24, 2014
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Nurses can perform colonoscopies as well as docs

(HealthDay)—Colonoscopy quality and safety are comparable for nurse and physician endoscopy trainees, according to a study published in the March issue of Clinical Gastroenterology and Hepatology.

Mar 04, 2014
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Colonoscopy

Colonoscopy is the endoscopic examination of the large bowel 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.

Colonoscopy can remove polyps as small as one millimetre 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. A colonoscopy allows an examination of the entire colon (measuring four to five feet in length). A sigmoidoscopy allows an examination of the distal portion (final two feet) of the colon, which may be sufficient because benefits to colonoscopy (cancer survival) have been limited to the distal portion of the colon.

The American Cancer Society “Guidelines for the Early Detection of Cancer” recommend, beginning at age 50, both men and women follow one of these testing schedules for screening to find colon polyps and cancer: 1. Flexible sigmoidoscopy every 5 years, or 2. Colonoscopy every 10 years, or 3. Double-contrast barium enema every 5 years, or 4. CT colonography (virtual colonoscopy) every 5 years.

A sigmoidoscopy is often used as a screening procedure for a full colonoscopy, often done in conjunction with a fecal occult blood test (FOBT). About 5% of these screened patients are referred to colonoscopy.

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/tumour removal or biopsy nor visualization of lesions smaller than 5 millimetres. If a growth or polyp is detected using CT colonography, a standard colonoscopy would still need to be performed.

Colonoscopy is not recommended for patients having an active flare of ulcerative colitis or Crohn's disease to avoid a perforation of the colon. Additionally, surgeons have lately been using the term pouchoscopy to refer to a colonoscopy of the ileo-anal pouch.

This text uses material from Wikipedia licensed under CC BY-SA