Here is a cerebral infarct from an arterial embolus, which often leads to a hemorrhagic appearance. There is edema which obscures the structures. The acutely edematous infarcted tissue may produce a mass effect. Note the decrease in size of the lateral ventricle on the left, with shift of the midline to the right. [Image contributed by Jeannette J. Townsend, MD, University of Utah]

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