Brain haemorrhage. Coloured axial computed tomography (CT) scan through the brain of a 28-year-old woman in a case of a meningeal haemorrhage. The scan shows an aneurysm at the level of the anterior communicating artery. An aneurysm occurs when an artery wall weakens and swells. If it bursts (as here), an aneurysm can cause severe internal haemorrhage. Meningeal haemorrhage is bleeding caused by damage to the middle meningeal artery, one of the two terminal branches of the external carotid artery.
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