Breast cancer has the potential to spread to almost any region of the body. The most common region breast cancer spreads to is the bone, followed by lung and liver. Anything unusual that lasts more than two weeks or is severe should be checked out. Symptoms of metastatic breast cancer may include:Bone painA persistent dry cough that continues for an extended periodShortness of breathLack of appetiteWeight lossNeurological pain or weakness, headachesWhile these symptoms may be possible signs of metastasis to the bone, lung, liver or other parts of the body, this does not mean that every woman who experiences them has metastatic breast cancer. There can be a variety of other reasons why you might experience the above symptoms, and they may have nothing to do with cancer of any kind. The important thing is that you listen and pay attention to what your body is trying to tell you and that you seek medical help to determine what may be causing your particular symptom or condition.