sigmoidoscope


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Related to sigmoidoscope: sigmoidoscopy, colonoscopy

sigmoidoscope

[sig′mȯid·ə‚skōp]
(medicine)
An appliance for the inspection, by artificial light, of the sigmoid colon; it differs from the proctoscope in its greater length and diameter.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Of the 22 advanced lesions, 14 were located distally, within reach of the flexible sigmoidoscope. Two of eight proximal advanced neoplasms were associated with a distal sentinel polyp, noted Dr.
noted that over half of colon cancers are beyond the reach of the flexible sigmoidoscope used in routine office screening.
But now the widespread use of the flexible sigmoidoscope has made the exam far more effective and much less uncomfortable for the patient than the rigid instrument that used to be the only means of doing the exam.
The sigmoidoscope is inserted into the rectum while you lie on your side so your health care professional can examine the lining of your colon.
Proctoscopy, performed with a shorter instrument than a sigmoidoscope, is not recommended as a CRC screening test.
Studies presented at the annual meeting of the American College of Gastroenterology in Phoenix, Ariz., showed that cancers beyond the reach of a flexible sigmoidoscope are on the increase and that normal findings on sigmoidoscopy do not correlate with normal findings in the proximal colon.
Studies presented at the annual meeting of the American College of Gastroenterology showed that cancers beyond the reach of a flexible sigmoidoscope are on the increase and that normal findings on sigmoidoscopy do not correlate with normal findings in the proximal colon.
To perform a sigmoidoscopy, the doctor uses a long, flexible tube with a light on the end called a sigmoidoscope to view the rectum and lower colon.
Although most abnormalities of the colon may be found in its lower third, periodic examination of the remaining two thirds is recommended, particularly when the sigmoidoscope reveals something.
A sigmoidoscope costs at least $1,000 and the physician has to worry about upkeep costs and staff
All patients were examined with an Olympus 60-cm flexible sigmoidoscope (Olympus Corporation of America, Lake Success, New York, model OSF-2, serial number 2618536).
(Colonoscopy, which uses a longer, flexible sigmoidoscope, will detect cancers throughout the colon, but is much more uncomfortable, and far more expensive than regular sigmoidoscopy.)