Magnetic resonance imaging ancillary features used in Liver Imaging Reporting and Data System: An illustrative review

Figure 12 Nodule-in-nodule architecture. Fat-suppressed T2-weighted image (A), pre- (B) and post-contrast fat-suppressed 3D-GRE T1-weighted images during the late hepatic arterial (C) and delayed phases (D). A small nodule within a larger nodule is seen in the right liver lobe (arrow A, B) showing distinct mild high signal intensity on the T2-weighted image (arrowheads, A), heterogeneous arterial hyperenhancement (arrowhead, C) and subtle washout (arrowhead, D). This imaging appearance is highly suggestive of a progressed hepatocellular carcinoma within a dysplastic nodule.