FIG 3. Images from the case of a 72-year-old woman with a cerebral lymphoma. A, Fast T2-weighted spin-echo image shows lesion to be moderately hyperintense. B, T1-weighted spin-echo image shows strong enhancement of lesion after the administration of contrast material. C, Diffusion-weighted image shows the lymphoma also to be hyperintense. D, ADC values are in the range of 0.55 to 0.6, similar to the values described in association with acute infarction. E, Histologic examination (hematoxylin and eosin; original magnification, x250) shows high cellularity and small extracellular space, which was significantly associated with reduced ADC values