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Fig. 2C —62-year-old man with 0.6-cm fat-containing nodule (group A) in advanced cirrhotic liver from chronic B-viral hepatitis. Nodule had transformed to hypervascular hepatocellular carcinoma (category II) at 13-month follow-up imaging. At 13-month follow-up, transverse arterial phase dynamic opposed-phase MR image shows 1.5-cm hypervascular lesion at same location (arrow). Hepatic arteriography revealed hypervascular lesion, suggesting hepatocellular carcinoma, and iodized oil accumulation was sustained after chemoembolization (not shown). Larger nonfatty hyperintense nodule in segment VIII (black arrowheads on A and B) shows no hypervascularity, but it gradually enlarged on further follow-up imaging studies, suggesting a dysplastic nodule or well-differentiated hepatocellular carcinoma.