Status epilepticus.

Figure. MR images, FLAIR (fluid-attenuated inversion recovery) sequences. Arrows align regions of change (shown only on the left side for clarity, but bilateral change is clearly evident). Note the progression of increased signal in the hippocampus during status epilepticus at onset (6/7/02), 1 week later (6/14/02), and then at 1 month (7/08/02).