ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Brain tumour. Computer artwork of a tumour (yellow) growing on a neuron (nerve cell, pink) in the brain. Tumours may be malignant (cancerous) or benign (non-cancerous). Tumours put pressure on the brain causing a range of symptoms, some of which are dependent on the brain area affected. Symptoms can include headaches, changes in behaviour, seizures and nausea and vomiting. Treatment depends upon the position of the tumour and whether it is malignant or benign, but may include surgery to remove it, or radiotherapy or immunotherapy to reduce its size.
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