Feb. 15, 2021
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Brain MRI at the age of 21 years, 9 years after initial attack. (C1) Sagittal T1-weighted MRI showing a new frontal hypointense lesion surrounded by edema. (C2) T2-weighted MRI showing the new right frontal tumefactive lesion with surrounding edema and associated mass effect. (C3 and C4) T1- and T2-weighted axial MRI images showing complete resolution of the lesion. (Contributed by Dr. Claudia Lucchinetti.)