Brain MRI:• Perfusion abnormalities (100% of 11)
• Leptomeningeal enhancement (62% of 13)
• Ischemic stroke (23% of 13)
CSF (N = 7):• Oligoclonal bands (29%)
• Elevated IgG and protein (14%)
• Low albumin (57%)
• Negative RT-PCR in CSF (100%)
EEG (N = 8): Nonspecific