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Radiotherapy treats cancer by using high-energy rays to destroy the cancer cells, while doing as little harm as possible to normal cells.
Radiotherapy is rarely used to treat colon cancer except occasionally to relieve symptoms.
Our radiotherapy| section discusses the treatment and its side effects in more detail.
Content last reviewed: 1 July 2012
Next planned review: 2014
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If you are diagnosed with colon or rectal cancer we have a pilot of a new online tool to help you make decisions about your treatment and care. Find out more|.
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© Macmillan Cancer Support 2013
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