Figure 12c. MR imaging appearance of an HCC with a tumor capsule in a noncirrhotic liver. (a) Axial fat-saturated T2-weighted fast SE image shows an HCC with predominantly high signal intensity (arrow). Owing to its fibrotic nature, the tumor capsule has low signal intensity on T2-weighted images and therefore is not visible. (b) Axial gadolinium-enhanced 3D GRE image obtained during the arterial phase shows intense, nearly homogeneous enhancement of the lesion (arrow). This appearance may simulate FNH. (c) Axial gadolinium-enhanced 3D GRE image obtained during the delayed phase shows enhancement of the tumor capsule surrounding the lesion (arrow), which demonstrates complete washout.