Fig 1.

Comparison of diffusion-weighted imaging (DWI) and cellular density between high and low apparent diffusion coefficient (ADC) groups (A and F). Contrast-enhanced T1-weighted image with regions of interest surrounding enhancing regions that were pathologically diagnosed as primary central nervous system non-Hodgkin lymphoma. Arrow indicates enhancing region subjected to stereotactic biopsy. DWI (B and G), black and white ADC map (C and H), color ADC map (D and I), and biopsy specimens (E and J) from patient 2 (low ADC group) and patient 17 (high ADC group) (hematoxylin-eosin, original magnification ×100).