Magnetic resonance imaging may simulate progressive multifocal leucoencephalopathy in a patient with chronic lymphocytic leukemia after fludarabine therapy
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Updated: Jun 18, 2026

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
Published on: February 19, 2021
J Kalita1, N S Patel, U K Misra
1Department of Neurology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India.
Abstract:
A 60-year-old male with chronic lymphatic leukemia (CLL) after 6 months of fludarabine therapy was admitted with status epilepticus and developed left hemiplegia. His magnetic resonance imaging revealed multiple T2 hyperintense lesions in the right frontal and left parieto-occipital lesion, simulating progressive multifocal leucoencephalopathy (PML). Cerebrospinal fluid Polymerase Chain Reaction (PCR) for JC virus was negative. We suggest the possible role of fludarabine in producing PML-like lesions in patients with Chronic Lymphocytic Leukemia (CLL).
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