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Images in 81-year-old man with pathologically confirmed hepatocellular carcinoma in segment 8 of the liver. In B-mode US, a 2.8 cm hyperechoic nodule is observed (a, arrows). In Sonazoid-enhanced US, the nodule shows arterial phase hyperenhancement (b, arrows) and does not show washout until 5 min after contrast media injection (c, arrows). The nodule shows isoenhancement in the Kupffer phase (d, arrows).
