Breast cancer stages

To be able to choose the treatment protocols, doctors classify different cases of breast cancer by stages. Breast cancer stages are usually mentioned as a number on a scale of 0 through IV. The minimum stage is 0 which is describing non-invasive cancers that remain within their original location and the maximum stage is IV which is describing invasive cancers that have spread outside the breast to other parts of the body. Breast cancer stage is based on several factors.
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