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Images of a 15-year-old female patient who presented with acute left hemiparesis (case 5).
A, Axial view unenhanced T1-weighted MR image (720/18/1) shows a concentric lesion with minimal hyperintensity at its outer ring due to magnetization transfer.
B, Multivoxel spectroscopic image (1500/20/2) of the concentric lesion shows increased choline peak and decreased N-acetyl aspartate peak.
C, Spectroscopic image of normal appearing white matter near the lesion shows all peaks as normal.
