fig 4.

T2-weighted (4000/115/1 [TR/TE/excitation]) MR images of case 3. The first MR scan taken 2 days after admission shows a large lesion in the right centrum semiovale (arrows), as well as in the periventricular white matter and basal ganglia (arrowheads). By 2 weeks, these lesions have grown despite steroid treatment and slight improvement in the patient's condition. By 1 month, some petecchial hemorrhage is seen in the lesions (arrows). On the last MR scan, performed 4 months after admission to the hospital, the lesions are somewhat decreased in size. Note the mild cortical pseudoatrophy likely caused by the steroid treatment