2nd August 2023

A 52-year-old man undergoing chemotherapy for colon cancer begins to experience headaches and confusion.

A 52-year-old man undergoing chemotherapy for colon cancer begins to experience headaches and confusion. On arrival at A&E, his temperature is 38.5’C, and he suffers a convulsive seizure. He has had several indoor pet cats throughout adulthood. After a diagnostic work-up, including an MRI-Head, he is started on pyrimethamine and sulfadiazine.

What does his MRI-Head show?

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