Figure 5. Oncocytoma of the right kidney. (a) Axial turbo spin echo (TSE) T₂ weighted image with fat saturation. The lesion is clearly hypointense. (b) Diffusion-weighted spin-echo echo planar imaging (SE EPI) image with b=0 s mm^–2. The lesion is slightly hypointense. (c) Diffusion-weighted SE EPI image with b=500 s mm^–2. The lesion is homogeneous and clearly hyperintense. This feature is indicative of restricted diffusion. (d) Apparent diffusion coefficient (ADC) map. The ADC value measured in the oncocytoma is 1.33±0.12 x 10^–3 mm² s^–1. (e) ADC map at the same level 1 week later. The ADC value measured in the oncocytoma is 1.38±0.21 x 10^–3 mm² s^–1, showing the reproducibility of the technique.