Stages of breast cancer – Penn State Health

There’s five stages, Stage zero spectral
carcinoma in situ it’s like a pre cancer. Stage one through three is invasive
breast cancer and the stage is determined by tumor size, lymph nodes and
then stage four is a cancer that has spread to other organs; the liver, the
lungs, the bone. So we stage cancers and it helps us determine treatment regimens
for patients.

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