Metastatic Breast Cancer

If your doctors says your cancer is “metastatic,” your breast cancer has spread from the original site in your breast to another part of the body. 

Breast cancer most often spreads to the liver, brain, bones or lungs. When breast cancer cells spread (metastasize), the cancer cells found in other parts of the body — for example the liver or the lungs — look like breast cancer cells, not liver or lung cancer cells. Metastatic breast cancer is classified as a Stage IV cancer, the most advanced stage.