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Colorectal cancer

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Precancerous conditions of the colon or rectum

Precancerous conditions of the colon or rectum are changes to cells that make them more likely to develop into cancer. These conditions are not yet cancer, but there is a higher chance these abnormal changes will become colorectal cancer.

The most common precancerous conditions of the colon or rectum are:

  • adenomas
  • hereditary colorectal syndromes

If you have a precancerous condition, you will likely have regular follow-up and screening tests to find cancer as early as possible if it develops. Some precancerous conditions can be treated with surgery to help reduce the risk that they will become cancer.


Paul Newcombe Volunteering during Daffodil Month is an incredibly rewarding experience, whether you have been touched by cancer or not.

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A home away from home

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For cancer patients who must travel a great distance to get to treatment, Canadian Cancer Society lodges offer a welcoming place to stay.

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