Table 2.

Clinical characteristics, brain MRI, and clinical course of patient 1 during pembrolizumab treatment.

Patient 1
Baseline clinical characteristics		Brain MRI and clinical course
Age at PML diagnosis (years)	78
Sex	Male
Underlying diagnosis	Non-Hodgkin lymphoma in remission
Latency initial hematologic malignancy and PML	9 months
Immunosuppressive treatment	Rituximab, bendamustine
Neurological deficits	Left-sided facial nerve palsy, psychomotor slowing, dysarthria	Left-sided facial nerve palsy, psychomotor slowing, dysarthria	Left-sided facial nerve palsy, psychomotor slowing, paresis of left hand, dysarthria, dysphagia	Left-sided facial nerve palsy, psychomotor slowing, left hemiparesis, dysarthria, dysphagia
Modified Rankin Scale	3	3	4	4
Total no. of pembrolizumab infusions	4

MRI, magnetic resonance imaging; PML, progressive multifocal leukoencephalopathy.