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Fig. 2E Doppler spectral examination in 52-year-old man of enhancing
intrathrombotic signals detected during contrast-enhanced sonography. Helical
CT scans. In arterial phase (C), hyperdense area that represents
hepatocellular carcinoma (HCC) nodule is seen in segment IV of liver. On same
scan, in portal (D) and late (E) phases, branch of portal vein
adjacent to HCC nodule appears to be fully patent, with no sign of small
neoplastic thrombus seen on contrast-enhanced sonography.