A malignant brain tumour is a cancerous growth in the brain.
It's different from a benign brain tumour, which isn't cancerous and tends to grow more slowly.
Get advice about coronavirus and cancer:
The symptoms of a brain tumour depend on where it is in the brain.
Common symptoms include:
See a GP if you have symptoms of a brain tumour that don't go away. It's unlikely to be a tumour, but it's best to be sure.
There are lots of types of brain tumour. They have different names depending on where they are in the brain.
They're also given a number from 1 to 4, known as the grade.
The higher the number, the more serious a tumour is:
Brain tumours are also called primary (which start in the brain) and secondary (which spread to the brain).
Cancer Research UK has more on types of brain tumours.
Treatment for a brain tumour aims to remove as much of it as possible and try to stop it coming back.
The main treatments are:
Medicines may also be used to relieve symptoms like headaches, seizures and being sick (vomiting).
The outlook for a malignant brain tumour depends on things like where it is in the brain, its size, and what grade it is.
It can sometimes be cured if caught early on, but a brain tumour often comes back and sometimes it isn't possible to remove it.
Speak to your care team if you'd like to know what the outlook is for you, as it varies from person to person.
You can also find general survival statistics for brain tumours on the Cancer Research UK website.
After treatment, you might have some lasting problems, such as:
It's important to follow a healthy lifestyle to lower your risk of stroke.
You may be able to gradually return to your normal activities as you recover, although some things (like contact sports) may need to be avoided for life.
Some people who have had a brain tumour can develop side effects from treatment months or years later, such as:
Rarely, a stroke might happen.
If you or someone you care for has any worrying symptoms that develop after brain tumour treatment, see your doctor.
If you think it's a stroke, dial 999 immediately and ask for an ambulance.
For more information and support, see: