Figure 1
From: Progressive multifocal leukoencephalopathy in a patient without apparent immunosuppression
Imaging studies conducted in the final hospital. A, computed tomography of the head without contrast. B, T1-weighted magnetic resonance imaging of the head. C and D, T2-weighted magnetic resonance imaging of the head. The arrows indicate the subcortical lesion in the left frontal lobe; the block arrows indicate the lesion in the right posterior limb of the internal capsule and thalamus extending along the corticospinal tract (solid arrow, image D)