• stage 4 breast cancer, metastatic breast cancer, how does breast cancer spread

    Stage 4 Breast Cancer in the Lungs

    What Does Stage 4 Breast Cancer (Metastatic Breast Cancer) Mean? Stage 4 breast cancer means that breast cancer has spread to other organs, such as the liver, brain, bones, lymph nodes, and lungs. Research reveals that breast cancer spreads to bones in about 85% of people with the disease, and up...