Radiotherapy treats cancer by using high-energy rays to destroy the tumour cells, while doing as little harm as possible to normal cells. Newer ways of giving radiotherapy are designed to limit the amount given to healthy brain tissue.
The section about radiotherapy has more information about this treatment, how it’s given and the possible side effects.
Radiotherapy can be used:
- as your main treatment if surgery is not possible
- after surgery if not all of the tumour was removed
- after surgery to reduce the risk of the tumour coming back
- with chemotherapy if you have a high-grade glioma
- if a low-grade tumour comes back after surgery.
If you have a low-grade glioma, your doctor may talk to you about delaying radiotherapy treatment. They monitor your symptoms and you have regular scans to show if there are any changes.