Imaging appearance of treated hepatocellular carcinoma

Figure 6 Arterial pseudoaneurysm after radiofrequency ablation for hepatocellular carcinoma. Post-treatment arterial phase (A) computed tomography (CT) shows a round enhancing area (long arrow) anterior to ablated zone (dotted arrow) with persistent enhancement on portal venous phase (B) CT. Round shape, isoattenuation to aorta and absence of wash-out suggest diagnosis of iatrogenic pseudoaneurysm. Note probe track (short arrow on A and B).