12/05/2026
Radiotherapy is used in breast cancer treatment to reduce the risk of a cancer. It can also be used to treat areas of pain caused by bone metastasis and inoperable breast cancers in specific cases. Here I explain how radiotherapy works and also discuss the side-effects which are local to the area where it was delivered as well as systemic such as fatigue, not forgetting that there is a very small risk increased risk of development of secondary cancers.