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A 78-year-old man who had a 20-year history of polycythemia vera (PV) with a JAK2 V617F mutation presented with gradually progressive disturbance of consciousness. Hyper-intense lesions in the peri-lateral ventricular… Click to show full abstract
A 78-year-old man who had a 20-year history of polycythemia vera (PV) with a JAK2 V617F mutation presented with gradually progressive disturbance of consciousness. Hyper-intense lesions in the peri-lateral ventricular area and left cerebellar hemisphere were observed by T2-weighted and fluid-attenuated inversion recovery magnetic resonance imaging. Cytologic and genetic analyses of the lymphoma cells obtained from his cerebrospinal fluid established the diagnosis of B-cell lymphoma. No lesions outside of the brain were recognized. Because of his poor general condition, he was not treated actively. A postmortem analysis revealed a JAK2 V617F mutation in the lymphoma cells, suggesting their origin was a PV clone.
Journal Title: Internal Medicine
Year Published: 2018
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