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... computed tomography scans revealed that the HCC nodule was adjacent to the intrahepatic B8 bile duct (Figure 1). A 6-Fr endoscopic nasobiliary drainage (ENBD) tube was inserted into the B8 bile duct 1 day before RFA (Figure 2). Before RFA, a perflubutane-based contrast agent (Sonazoid, Daiichi Sankyo, Tokyo, Japan) was injected through the ENBD tube to confirm enhancement of the bile duct adjacent to the HCC nodule ( Figure 3). ...
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