Differentiating between Hemorrhagic Infarct and Parenchymal Intracerebral Hemorrhage
Figure 7
43-year-old woman presented with acute confusion with no history of trauma. (a) Axial unenhanced CT images show a large hemorrhage centered in the left temporal lobe. The subtle hyperdensity in the left sigmoid sinus is suggestive of thrombus (arrow). The topography of the lesion is not what would be expected from a hemorrhagic infarct involving the inferior division of the middle cerebral artery, that is, the surrounding hypodensity fails to reach the cortical surface. (b) MR venogram shows occlusion of the left transverse and sigmoid sinuses, confirming the hemorrhage is secondary to venous infarction.
