Contrast-enhanced ultrasound in the diagnosis of nodules in liver cirrhosis

Figure 1 A 61-year-old man with hepatocellular carcinoma and renal failure. A: Gray-scale ultrasound shows a hypoechoic mass (arrow) within the cirrhotic liver. There is a large amount of ascites surrounding the liver. Contrast-enhanced computed tomography or magnetic resonance scan could not be performed because of renal failure; B: Contrast-enhanced ultrasound (CEUS) image in the arterial phase shows hypervascularity of the mass (arrow) relative to the liver; C: The mass (arrow) shows washout in the portal venous phase. The diagnosis of hepatocellular carcinoma was made based on imaging findings of CEUS without biopsy.