Any type of cancer can theoretically produce metastases, but certain types are more likely to metastasize than others are. Usually, the sooner a cancer is found, the less time it has to metastasize. Your body's immune system is actually rather good at destroying these cells, but the more time a cancer has to release cells, the more likely it is that some metastases will relocate and begin growing a new cancerous tumor. Many times, metastases are found in the lymph nodes near a cancerous tumor. The most common sites for metastases to begin growing a new, life-threatening, tumor, are the lungs, liver, bones, and brain.
Metastatic cancer is treated with chemotherapy or hormone therapy .
Breast Sarcoma - Sarcoma is cancer that arises from certain types of connective tissue . In the breast it is extremely rare, but when it does arise in involves the cells lining the outside of the ducts , lobules , or blood vessels . Breast Lymphoma - Lymphoma is cancer that arises from the lymphatic vessels or lymph nodes . It is a very rare cancer, and is not treated by surgery.