"Breast Cancer"

"Breast cancer is a growth of malignant cells within the breast tissue. Most breast cancers form in the milk ducts or lobes of the breast. There are two types of cancers, non-invasive (or in-situ) which have not spread to the surrounding tissue or other parts of the body and invasive cancers which have spread elsewhere.
Breast cancer will usually first spread to lymph nodes within the breast and the armpits. It may also spread to other areas of the body including the bones, liver, brain and lungs. Tumours in these locations are called 'secondary tumours'." womenhealth