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A 51-year-old hypertensive woman with unilateral moderate edema from PRES on 3T FLAIR images. This likely occurred unilaterally because the patient had a severe (>90%) left carotid bulb stenosis, which presumably prevented hyperperfusion of the left cerebral hemisphere. B, There is a small amount of SAH (arrows) on SWI. On a follow-up 3T MR imaging performed 70 days later, FLAIR image (C) demonstrated resolution of the PRES-related edema, while the SAH had also resolved on SWI (D).
