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According to the information below , 8207 practices perform Colorectal
Recommended screening tests to detect Colorectal Cancer are:
Fecal occult blood test (FOBT), which checks for hidden blood in three
consecutive stool samples, should be administered every year.
( Home-administered fecal occult blood test for colorectal cancer
screenings are available)
Flexible sigmoidoscopy, where physicians use a flexible, lighted tube
(sigmoidoscope) to inspect visually the interior walls of the rectum
and part of the colon, should be administered every 5 years.
Colonoscopy, where physicians use a flexible, lighted tube
(colonoscope) to inspect visually the interior walls of the rectum and
the entire colon, should be administered every 10 years. During this
procedure, samples of tissue may be collected for closer examination,
or polyps may be removed. Colonoscopies can be used as screening tests
or as follow-up diagnostic tools when the results of another screening
test are positive.
Double-contrast barium enema, a test that uses a series of X-rays of
the colon and rectum (taken after the patient is given an enema
containing barium dye followed by an injection of air in the lower
bowel), should be administered every 5 years.
How many endoscopies are performed for colorectal cancer screening?
Results from CDC's survey of endoscopic capacity.
?In 2002, a total of 8207 practices reported performing flexible
sigmoidoscopy or colonoscopy in the United States.?
?Gastroenterologists performed 43.7% (95% confidence interval [CI],
37.2-50.2) of all sigmoidoscopies and 82.5% (95% CI, 80.3-84.7) of all
colonoscopies. Primary care physicians performed 24.9% (95% CI,
20.3-29.5) of all sigmoidoscopies and 2.0% (95% CI, 1.4-2.6) of all
colonoscopies. All physicians combined performed approximately 2.8
million (95% CI, 2.4-3.1) flexible sigmoidoscopies and 14.2 million
(95% CI, 12.1-16.4) colonoscopies but reported that they could
increase to approximately 9.5 million flexible sigmoidoscopies (95%
CI, 8.4-10.5) and 22.4 million colonoscopies (95% CI, 20.1-24.8) in 1
Gastroenterology. 2004 Dec;127(6):1670-7.