Advanced breast cancer (also referred to as metastatic breast cancer) occurs when breast cancer has spread (or metastasised) to other parts of the body. Treatment of metastatic breast cancer aims to control the growth and spread of the cancer, to relieve symptoms, reduce pain, and improve or maintain quality of life.

Treatment options depend on the location and molecular makeup of the cancer. Treatment may shrink or slow the growth of tumours, ease symptoms and help women live longer.