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Why would I need this test?
How can I prepare for this test?
How is this test performed?
How long does the procedure take?
What happens if an abnormality is found?
Are there any risks associated with this test?
What is a desirable result?



cheapest hotels ArendalWhy would I need this test?

Colonoscopy (koh-luh-NAH-skuh-pee) is done to detect early signs of cancer in the colon and rectum. Your physician may also want you to have the procedure if you have abdominal symptoms (e.g., pain or discomfort, especially if associated with weight loss or anemia); abnormal results of barium X-ray; chronic diarrhea; constipation; a change in bowel habits, or anemia.

Through colonoscopy, a physician can look inside your entire large intestine, from the lowest part, the rectum, all the way up through the colon to the lower end of the small intestine. He or she can see inflamed tissue, abnormal growths called polyps (which may be cancerous or non-cancerous), ulcers, bleeding and muscle spasms.

Studies suggest that colonoscopy is a more effective screening method than barium enema.

How can I prepare for this test?

Your colon must be empty for the colonoscopy to be thorough and safe. To prepare you should:

  • Drink only clear liquids and eat no food the day before the procedure
  • Drink a special solution which flushes the colon clean; alternatively, you may take laxatives or use an enema
  • Arrange for someone to take you home afterward. You will not be allowed to drive because of the sedatives.

How is this test performed?

Colonoscopy is usually performed on an outpatient basis. The patient is mildly sedated. The physician will insert a long, flexible, lighted tube into your rectum and slowly guide it into your colon. The scope transmits an image of the inside of the colon, so the physician can carefully examine the lining of the colon.

How long does the procedure take?

Colonoscopy usually takes between 30 to 60 minutes.

What happens if an abnormality is found?

hotel rooms KirchbergIf anything unusual is in your colon, like a polyp or inflamed tissue, the physician can remove a piece of it using tiny instruments passing through the scope. The tissue is then sent to a laboratory for testing. If there is bleeding in the colon, the physician can pass a laser, heater probe, or electrical probe, or inject special medicines, through the scope and use it to stop the bleeding.

Are there any risks associated with this test?

Serious risks with colonoscopy are very uncommon. However, excessive bleeding may occur, especially with the removal of a large polyp, and the lining of the colon can tear.

What is a desirable result?

There are no abnormalities detectable. Or, a biopsy shows that a polyp is benign (non-cancerous).

References
National Cancer Institute
National Digestive Diseases Information Clearinghouse
Andrews M, et al. Everything You Need to Know About Medical Tests. Springhouse, PA: Springhouse Corporation, 1996.

If you'd like more information, please see these related tests and procedures:
Digital Rectal Examination
Sigmoidoscopy

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Disclaimer:ERROR MSGThe text presented on these pages is for informational purposes only. It is not a substitute for professional medical advice. The information presented may not be appropriate or applicable to your individual medical situation. Do not use this information to diagnose or treat a health problem or disease without first consulting a qualified healthcare provider. The information may not be representative of benefits covered under your PacifiCare health plan. You must consult your Evidence of Coverage for information regarding the benefits, exclusions and limitations applicable to your PacifiCare health plan. Please consult PacifiCare or your healthcare provider if you have any questions or concerns in connection with the information presented on these pages.

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