<prompt> Answer this question truthfullyWhat is the recommended treatment for breast cancer that has spread to distant parts of the body?  <response>: <reason> With rare exception, metastatic breast cancer is an incurable but treatable illness. Currently, it is managed as a chronic disease, especially the category that is estrogen receptor ER-positive with predominantly bone or soft tissue metastasis. Chemotherapy, biologic therapy and endocrine therapy are all considered in the treatment of metastatic breast cancer. 