动脉栓子引起的脑梗死,常导致出血性外观。水肿使结构模糊不清。急性水肿性梗死组织可形成团块效应。可见左侧正中线移位，脑室缩小。
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 ventricle on the left with shift of the midline.