About 4 out of 10 people with cancer (40%) have radiotherapy as part of their treatment. Radiotherapy uses radiation to kill cancer cells.

Find out how radiotherapy is used to treat cancer, including who gives it and where you have it.

External radiotherapy targets radiation at the cancer from a radiotherapy machine. Read about types of external radiotherapy and what happens during planning.

Read about internal radiotherapy, what it is like, and where you have treatment.

Radiotherapy to treat symptoms and give a better quality of life is called palliative radiotherapy.

Radiotherapy can cause different side effects when it treats different areas of the body. Find out what these side effects are and how they affect you during and after treatment.

When your radiotherapy treatment ends your treatment team will give you advice and information about your recovery.

All cancer treatments have to be fully researched before they can be used for everyone. This is so we know that they work, they are better than the treatments already available and they are safe.