ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Herpes encephalitis. Coloured coronal magnetic resonance imaging (MRI) scans of the brain of a 25-year-old patient with herpes encephalitis. This is an inflammation of the brain caused by an infection with the herpes simplex virus, and has resulted in a large lesion (orange). The lesion is in the brain's right temporal lobe, which is at left in these views from the front. The scans move from the front of the brain to the back, and are arranged in two rows from upper left to lower right. Inflammation of the brain and its surrounding membranes may result in severe bleeding and cell death in the brain. Early diagnosis and treatment with anti-viral medication is essential, as the condition has a high mortality rate.
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