How effective is palliative radiotherapy for metastatic breast cancer?

Metastatic breast cancer can affect different parts of the body, so radiotherapy is planned for a particular troublesome site rather than the whole cancer at once. It may ease pain, pressure, bleeding or other symptoms caused by a tumour. The expected benefit depends on the location, size and sensitivity of the treated area, previous treatments and your general condition. Symptoms may improve gradually, and a temporary flare can occur. Radiotherapy may sit alongside medicines that treat cancer throughout the body, pain relief, bone care or other supportive measures.

Tell the team which symptom matters most to you and what activity you hope to regain, such as sleeping, walking or eating. Mention previous radiation, medicines, pregnancy possibility and any treatment device. Keep taking medicines as prescribed and report new effects rather than stopping treatment alone. Ask how to care for the treated skin or body area, how quickly to call about worsening symptoms and how your oncology teams will coordinate. See more about [Palliative Radiotherapy](/treatments/radiation-oncology/palliative-radiotherapy/).

Call the cancer team promptly for uncontrolled pain, rapidly worsening swelling, repeated vomiting, new bleeding or a symptom that prevents basic activities. New weakness, numbness, trouble walking or loss of bladder or bowel control requires urgent assessment because pressure around the spine can damage nerves. Severe breathlessness, chest pain, confusion or collapse needs emergency care.

Which symptom is radiotherapy expected to improve? What area will be treated, and what nearby tissues need protection? When should I notice a change? What medicines should I use if symptoms flare? How does this treatment fit with systemic breast cancer treatment, and when will the plan be reviewed?