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[Clinical Picture] AIDS-related primary CNS lymphoma

A 54-year-old man with a known history of HIV, hepatitis B, and hepatitis C, presented to the emergency department in June, 2014, with a 2-week history of worsening headaches, hallucinations, and confusion. He was disoriented in time and place, but on examination we found no neurological deficits. He was not taking antiretroviral therapy.