Fig. 3

a and b Follow-up magnetic resonance imaging (MRI) of the brain. Follow-up MRI of the brain 3 days after the first scan demonstrated a significant increase in size and extension of the now-confluent white matter lesions on the axial 3-mm fluid-attenuated inversion recovery image (a), especially notable bilaterally in the frontal and parietal lobes with stipple contrast enhancement with a “miliar” distribution pattern (b; axial T1-weighted image after contrast application, 3 mm)