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A 74 year old man presented with new onset atrial fibrillation and the acute loss of vision to the right. Two days later, she developed headache, nausea and vomiting accompanied by a decreased level of alertness.
Axial CT scans: Note the large hemorrhage in the left occipital lobe, surrounded by some vasogenic edema. In this case, the patient presumably had an embolic infarction from the atrial fibrillation with the embolus occluding the left posterior cerebral artery. In some cases, ischemic infarcts may turn hemorrhagic as it did in this case.
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