Case of the Week
Section Editors: Sapna Rawal,1 Matylda Machnowska,1 Anvita Pauranik2
1University of Toronto, Toronto, Ontario, Canada
2University of Calgary, Calgary, Alberta, Canada
November 26, 2020
A 42-year-old man with 4 days of subacute confusion, memory disturbances, and ataxia. History is significant for metastatic renal cell carcinoma diagnosed 2 years prior, s/p 4 cycles of nivolumab immunologic therapy ending 2 weeks prior to presentation. Initial MRI was unremarkable. MRI 1 month after presentation demonstrated the following:
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