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Washington University Experience | INFECTION | Viruses | PML (JC Virus) | PML - IRIS | 5A2 PML - IRIS (Case 5) T1 no contrast, slice 52 - Copy (2) copy
5A2,3 T1-weighted image (#5A2) demonstrates hypointensity of lesion (arrow) which enhances with contrast (#5A3), a pattern more typical of PML - IRIS than the non-enhancing pattern of typical PML.