Brain cancer occurs when abnormal cells develop in the brain, forming a cancerous tumour. Tumours can start in the brain, or can develop from cancer in other parts of the body.
There are over 40 types of brain tumours classed into two groups:
- benign: slow growing, with lower chance of spreading
- malignant: cancerous tumour that may spread to across the brain and spinal cord
Brain tumours are usually diagnosed by several tests, including MRI and CT scans.