Fig. 11. A 65-year-old man, referred for evaluation after chemoembolization.

In B-mode ultrasonography, pre-contrast (A, B), a hypoechoic nodule with irregular borders is observed, measuring about 3.0×2.8 cm. The contrast-enhanced ultrasonography evaluation shows the presence of arterial hyperenhancement in the wall nodule, which starts in the arterial phase (C, D) indicating the presence of viable tumors, most evident in the portal phase (E) within the treated nodule. This indicates the need to complement the treatment with a new ablative procedure.