Biopsy-proven PML in an HIV-negative patient with discoid lupus: Failure to detect JC virus in CSF

Biopsy-proven PML in an HIV-negative patient with discoid lupus: Failure to detect JC virus in CSF

We current a case of a 58-year-old man with a historical past of extreme discoid lupus erythematosus and acute encephalopathy and incoordination. Antinuclear antibody testing was weakly constructive however all different laboratory exams for systemic lupus erythematosus had been detrimental and serum quantitative immunoglobulins and lymphocytes had been regular. MRI mind confirmed T2/FLAIR hyperintensities inside the bilateral…

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