Fig. 2. Typical CEUS findings of cholangiocarcinoma in 57-year-old woman with CHB viral infection.On arterial (A) and portal (B) phases of CT, 8-cm low-attenuated.

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Fig. 2. Typical CEUS findings of cholangiocarcinoma in 57-year-old woman with CHB viral infection.On arterial (A) and portal (B) phases of CT, 8-cm low-attenuated mass (arrows) is seen with equivocal hyperenhancement in arterial phase and central hyperenhancement with peripheral low attenuation in 3-minute delayed phase at right lobe of liver. Mass (arrowheads) shows isoechogenicity on gray-scale US (C). On CEUS, mass (arrowheads) shows heterogeneous central hyperenhancement in arterial phase (20 seconds after contrast injection) (D), marked washout in both portal (60 seconds) (E) and late (180 seconds) (F) phases, compatible with LI-RADS-M. Lesion was confirmed as cholangiocarcinoma via biopsy. CHB = chronic hepatitis B Fig. 2. Typical CEUS findings of cholangiocarcinoma in 57-year-old woman with CHB viral infection.On arterial (A) and portal (B) phases of CT, 8-cm low-attenuated mass (arrows) is seen with equivocal hyperenhancement in arterial phase and central hyperenhancement with… Korean J Radiol. 2019 Jun;20(6):863-879. https://doi.org/10.3348/kjr.2018.0450