fig4

Figure 4. Focal nodular hyperplasia. 25-year-old woman with an incidentally discovered liver mass found during ultrasound performed for examination of her bowel. An incidentally discovered superficial focal hypoechoic liver mass (A); an early arterial phase (AP) image shows a stellate pattern of linear vessels in the center of the mass (B); at the peak of AP enhancement, the mass is brightly and uniformly enhanced (C); at 3 min, the mass continues to show sustained enhancement greater than the adjacent liver (D)