Fig. 3

A liver mass was discovered during ultrasound examination in a 52-year-old woman with non-alcoholic fatty liver disease and without risk for HCC. The focal liver lesions were estimated to be about 1.3 cm in diameter and located in the right lobes (A). Colour Doppler flow imaging revealed no obvious blood flow in the lesions (B). On CEUS, the mass displayed hyper-enhancement after the injection of contrast agent (C) and no washout (D). The lesion was classified as LR-4 according to the CEUS LI-RADS guidelines. Histopathology revealed the lesion to be an angiomyolipoma. CEUS = contrast-enhanced ultrasound; HCC = hepatocellular carcinoma; LI-RADS = Liver Imaging Reporting and Data System; LR = LI-RADS category