Reactive lymphoid hyperplasia of the liver: Perinodular enhancement on contrast-enhanced computed tomography and magnetic resonance imaging

Figure 1 Unenhanced and double-phase contrast-enhanced computed tomography images of the liver, showing a nodule in Segment 1 (arrows). The nodule shows subtle low attenuation relative to that of liver parenchyma on the unenhanced image (A). On contrast-enhanced computed tomography, the nodule shows perinodular enhancement in the arterial dominant phase (B) and washout of contrast medium in the equilibrium phase (C).