Fig. 5

Diffuse large B-cell lymphoma with secondary liver involvement in a 57-year-old man. (a) Axial T2-weighted MR image demonstrating a well-defined, lobulated, mildly hyperintense lesion (arrow) with a more hyperintense central “scar.” It shows peripheral diffusion restriction (arrow in b). The lesion is hypointense on T1-weighted image (arrow in c). On contrast-enhanced scan the lesion shows mild progressive enhancement in the arterial and venous phase images (arrows in d and e), which is less than the surrounding liver parenchyma while the scar remains predominantly non-enhancing. On the 1-hr delayed hepatobiliary phase, the lesion remains hypointense to the surrounding liver parenchyma while there is retention of contrast within the scar