 aidslymphoma1a.jpg Noncontrast CT scan shows large mass with a hyperdense rim (short arrows) centered in region of left basal ganglia. There is a large associated area of surrounding white matter edema (e). Note additional hyperdense lesion (arrow) of right posterior putamen, also with surrounding white matter edema. |
 aidslymphoma1b.jpg Contrast CT scan shows intense enhancement of both masses (arrows) with a central non-enhancing portion (black arrowhead) of the larger left lesion. |
 aidslymphoma1c.jpg Coronal autopsy specimen at level of caudate nucleus shows well-defined mass (*) with color between that of white and gray matter. There is a second mass with a surrounding brownish rim (black arrowhead), representing hemorrhage, immediately superior to the larger lesion (not shown in A or B). |