Figure 9.

Yttrium-90 radioembolization of diffuse, infiltrative hepatocellular carcinoma with vascular invasion. A: Contrast-enhanced MR of a 55-year-old female with cirrhosis demonstrates an infiltrative hepatocellular carcinoma replacing the anterior right hepatic lobe. Tumor-associated portal venous thrombus is present in the right portal vein (arrow); B: Digital subtraction angiogram with a microcatheter in the right hepatic artery shows diffuse tumor hypervascularity. The patient underwent a right hepatic artery Y90 radioembolization; C: Contrast-enhanced MR 12 mo after radioembolization demonstrates complete necrosis of the entire tumor with marked reduction in size. MR: Magnetic resonance; Y90: Yttrium-90.