Definition

Meningiomas are tumours arising from meninges which are three thin layers of tissue covering the brain and spinal cord. Meningiomas are usually benign and typically slow- growing, sometimes being present for many years before discovery. They tend to grow inwards from the bone of the skull or spinal canal and cause pressure on adjacent brain and spinal cord. However, they occasionally grow outwards and cause thickening of the bone.

They are classified into 3 types based on different characteristics visible down the microscope which helps guide clinicians in their treatment decisions.

With improving imaging technologies, surgical techniques and other non-surgical treatments such as focussed radiotherapy, meningiomas are diagnosed are tending to be diagnosed earlier and are being treated more effectively than was previously the case.

Written by Alireza Shoakazemi for BIMS

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