Figure 7b. Case 2. (a) Unenhanced T1-weighted image demonstrates an ill-defined, heterogeneous 7 x 4 cm mass in the left hepatic lobe with high signal intensity relative to that of liver parenchyma. (b, c) On proton-density–weighted (b) and T2-weighted (c) fast spin-echo images, the lesion remains high in signal intensity, with slight diminution in intensity with the more heavily T2-weighted pulse sequence (c).