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Symptoms of Colon Cancer

Posted: May 1, 2007

Colon cancer is most curable when found in its early stages through screening tests. Screening can detect colon cancer before noticeable symptoms have developed.

A common symptom of colorectal cancer is a change in bowel habits. Symptoms include:

  • Having diarrhea or constipation
  • Feeling that your bowel does not empty completely
  • Finding blood (either bright red or very dark) in your stool
  • Finding your stools are narrower than usual
  • Frequently having gas pains or cramps, or feeling full or bloated
  • Losing weight with no known reason
  • Feeling very tired all the time
  • Having nausea or vomiting

Most often, these symptoms are not due to cancer. Other health problems can cause the same symptoms. Anyone with these symptoms should see a doctor to be diagnosed and treated as early as possible.

Usually, early cancer does not cause pain. It is important not to wait to feel pain before seeing a doctor.

Source: National Cancer Institute


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