SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY
Metastatic brain cancer. Coloured Computed Tomo- graphy (CT) scan of an axial section through the brain of a 70 year old man, showing a metastatic tumour. At upper centre is the tumour (green); around it is a fluid-accumulation or oedema (blue). Brain tissue is yellow, with lighter areas the folds in the cerebrum. Metastatic cancer is a secondary disease spread from cancer elsewhere in the body. This patient had primary cancer of the lung. Metastatic brain tumours are malignant. Typically they cause brain compression and nerve damage which may cause headache, muscle weakness, sensory and speech disturbances, and sometimes epileptic seizures. Surgery may be possible.
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