Figure 3.

A 5.6 cm wide hepatocellular carcinoma (HCC) mass in a 69-year-old man with chronic hepatitis B. (a) Axial precontrast, (b) late arterial, (c) portal venous and (d) equilibrium phase CT scans show an overt arterial enhancement lesion in segment II of the liver. The lesion shows hypoattenuation in the precontrast phase and relatively early washout during the portal venous phase. Note the intratumoral heterogeneous enhancement (b) and multiple, high-density, dot-like attenuation [(arrows in (b)] in the tumour indicating intratumoral vessels. Pathology review of the resected liver revealed a moderately differentiated HCC.