fig6
![Contrast-enhanced ultrasonography with Sonazoid in hepatocellular carcinoma diagnosis](https://image.oaes.cc/4deea99a-ae31-4cd8-a6ca-4c3358ce5950/3579.fig.6.jpg)
Figure 6. Nodule-in-nodule appearance of hepatocellular carcinoma. A: Arterial phase image shows an inner hypervascular spot (arrow) within the outer hypovascular nodule (arrowheads); B: Kupffer phase image shows better differentiation between a small defect (arrow) and the outer hypointense nodule (arrowheads)