What are the chances of breast cancer spreading to other parts of the body?

Good: Breast Cancer like all malignancies is programmed to spread. When first appearing as a lesion growing out of the milk duct, it remains in-situ for a period of time because clones or populations that spread havnt formed. As early mutations occur new populations of cells will leave the primary to spread, so that the rule is: The earlier the diagnosis the better the chance of cure.