FIG 5. 56-year-old woman with diffuse large B cell lymphoma.

A, Axial T2-weighted MR image shows lymphoma in jugulodigastric node (arrow) with homogeneous signal intensity.

B, Axial diffusion-weighted echo-planar MR image at b factor of 500 s/mm² of nodal lymphoma (arrow) shows hyperintensity.

C, Axial diffusion-weighted echo-planar MR image at b factor of 1000 s/mm² of nodal lymphoma (arrow) shows a defined area of hyperintensity. A small reduction in signal intensity on the image at b 1000 s/mm² compared with the image at b 500 s/mm² results in a low ADC (0.258 x 10^-3 mm²/s).