Fig. 7From: Primary central nervous system post-transplant lymphoproliferative disorders: the spectrum of imaging appearances and differentialPrimary central nervous system lymphoma. T1-weighted image with gadolinium (a) shows a diffusely enhanced lesion (long arrow) in the periventricular left frontal horn with mild surrounding vasogenic edema (arrowheads). Also, note the ependymal enhancement along the right frontal horn (short arrow). ADC map (b) shows homogeneous diffusion restriction (arrow)Back to article page