A usually non-cancerous tumour that arises from the membranes surrounding the brain and spinal cord.
It isn't clear what causes a meningioma. Radiation therapy, female hormones and genetics may play a role. In most cases, the condition is non-cancerous.
Symptoms depend on the size of the tumour, changes in vision, headaches, hearing loss and seizures.
A small, slow-growing meningioma that isn't causing signs or symptoms may not require treatment. When required, treatment might involve surgery or radiation