FIG 2. Follow-up MR images obtained 4 days after the first seizure occurred.

A, Fluid-attenuated inversion recovery image shows high signal intensity in both medial temporal lobes and hyperintensities of the right frontobasal cortex (arrowhead).

B, Fluid-attenuated inversion recovery image shows high signal intensity in both medial temporal lobes and hyperintensities of the right insular cortex (arrowhead). No mass effect was seen.

C, Diffusion-weighted echo-planar image (5400/103/1; b value of 1000 s/mm²) shows the corresponding alterations of the limbic (arrows) and the right frontobasal cortex (arrowhead).

D, T1-weighted image (548/12/2) shows low signal intensity of the right medial temporal lobe (arrow).

E, Contrast-enhanced T1-weighted image (525/17/2) shows no contrast enhancement.