If your doctor thinks you might have a brain or spinal tumour, you’ll have different tests to check your nervous system.
This can include everything from answering simple questions to seeing whether you can feel pinpricks on your skin.
A range of hospital tests can also be used.
MRI and CT scans are used to build up a 3D image of your brain or spinal cord.
PET scans, SPECT scans, blood tests and X-rays are all used to find out more about tumours.
And a biopsy can be used to take cells from a tumour so they can be looked at closely under a microscope for signs of cancer. You’ll be given an anaesthetic if you have a biopsy.
You can find out more in our