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How are the stages of breast cancer determined?

If breast cancer is found, more tests will be done to find out the size and extent of the cancer in the breast and to determine whether the cancer has spread from the breast to other parts of the body. This is called staging. The stages range from Stage 0 (a very early cancer) to Stage IV (the cancer has spread to other organs of the body). It may also be classified as recurrent (the cancer has come back after being treated), according to the American Joint Committee on Cancer, seventh edition.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.