Acute ischemic stroke: dense MCA sign
Sudden onset left sided weakness and aphasia.
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This case illustrates early signs of infarction. Although in this case the parenchymal hypodensity is well seen, however, in patients with an earlier presentation, the dense MCA sign and insular ribbon sign may be the only evidence of infarction and prompt either CT perfusion or MRI to determine the feasibility of thrombolytic therapy.