K H FUNG / SCIENCE PHOTO LIBRARY K H FUNG / SCIENCE PHOTO LIBRARY
Cerebral aneurysm. Digitally enhanced 3D computed tomography (CT) scan of an axial view of a human brain with an aneurysm (highlighted at centre) in one of the blood vessels. An aneurysm is a weakening of the walls of a blood vessel, resulting in it swelling as seen here. Surgical intervention is needed to repair the aneurysm as a rupture is usually fatal.
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