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![Diagnosing non-hepatocellular carcinoma malignancies on CT/MRI and contrast enhanced ultrasound: the Liver Imaging Reporting and Data System approach](https://image.oaes.cc/492c3b85-335a-4c29-8c78-a6db7e36020a/3436.fig.4.jpg)
Figure 4. Intrahepatic cholangiocarcinoma in a 51-year-old man with hepatitis-C related liver cirrhosis. CT scans in the arterial (A), portal venous (B), and delayed (C) phases demonstrate a hypoattenuating hepatic nodule (arrow); C: the nodule shows a mild central enhancement in the delayed phase; D: CEUS in the arterial phase shows a rim arterial-phase hyperenhancement in the nodule (arrow); E: CEUS at 42 s after contrast injection demonstrates early washout (arrow); F: CEUS at 104 s after contrast injection shows marked washout (arrow). CEUS: contrast enhanced ultrasound