Brain cancer. Section through a gross specimen of a brain showing malignant (cancerous) tumours (upper left). This is an ependymoma, a rare cancer tha

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Brain cancer. Section through a gross specimen of a brain showing malignant (cancerous) tumours (upper left). This is an ependymoma, a rare cancer that arises from the cells that line the ventricles of the brain and spinal cord. In this case both grey and white matter have been destroyed and replaced by the tumours.

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Photo credit: © MEDIMAGE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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