Fig. 2From: Hepatocellular adenoma: comparison between real-time contrast-enhanced ultrasound and dynamic computed tomographyCEUS images in a 44-year-old male (Case 18) with HCA showed centripetal filling sign in the arterial phase. The lesion showed fine rim hyper-enhancement at about 11 s in the early arterial phase (a, b), following a rapid centripetal homogenous hyper-enhancement of whole mass (c, d) Back to article page