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Colon polyps
  • Colon polyps are tiny growths that form on the inside of the large intestine (also known as the colon). Polyps are very frequent. Roughly one-third to one-half of all adults have them by the time they are 50 years old. They do not generally cause symptoms. But some polyps can be or become cancer, so doctors sometimes remove them.

  • Colon polyps do not generally cause symptoms.

Doctors usually find colon polyps when they are doing screening tests to confirm for colon or rectal cancer. Cancer screening tests are tests that are done to try and find cancer early, before a person has symptoms. The screening tests for colon and rectal cancer include:

  • Colonoscopy – Before having a colonoscopy, you will get medicine to assist you relax. Then a doctor will put a thin tube into your anus and advance it into your colon. The tube has a camera attached to it, so the doctor can look in your colon. The tube also has tools on the end, so the doctor can remove pieces of tissue, including polyps. After polyps are removed, they generally go to a lab to be tested for cancer and other problems.
  • Sigmoidoscopy – A sigmoidoscopy is very comparable to a colonoscopy. The only difference is that this test looks only at the first part of the colon, and a colonoscopy looks at the entire colon.
  • CT colonography (also known as virtual colonoscopy) – For a virtual colonoscopy, you have a special kind of X-ray taken, called a “CT scan.” This test creates pictures of the colon.
  • Stool test – “Stool” is another word for “bowel movements.” Stool tests check for blood or abnormal genes in samples of stool. If a stool test indicates that something might be wrong with the colon, doctors generally follow up with a colonoscopy. Then doctors discover polyps, if they are there.
  • Capsule colonoscopy – Rarely, your doctor might do something called a “capsule” colonoscopy. For this test, you swallow a special capsule that contains tiny wireless video cameras.

Doctors eliminate polyps using the same tools they use for a colonoscopy. They can remove polyps either by snipping them off with a special cutting tool, or by catching the polyps in a noose. Most polyps can be removed during a colonoscopy. But sometimes, large polyps require to be removed at a later time.

You may require a colonoscopy every few years to confirm for more polyps. In some people polyps come back. And if you had the kind of polyps that could become cancer, your doctor will want to remove them as they appear. Also, if the polyps you had removed were the kind that could become cancer, people in your family might require them to be checked for polyps and colon cancer, too.

Depending on your position, your doctor might suggest genetic testing. This can show if your polyps are related to an abnormal gene that runs in families.

To decrease your chances of getting polyps or colon cancer:

  • Eat a diet that is low in fat and high in fruits, vegetables, and fiber
  • Lose weight, if you are overweight
  • Do not smoke
  • Limit the quantity of alcohol you drink
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