Contrast-enhanced ultrasonography in the evaluation of incidental focal liver lesions: A cost-effectiveness analysis

Figure 4 Focal nodular hyperplasia. Female, 52 years of age, with anaemia. Native ultrasound (A) shows 19 mm hypoechoic lesion in segment S2 of the left liver lobe. On subsequent contrast-enhanced ultrasonography (CEUS) examination, there is increased centrifugal perfusion in arterial phase (B); In the late phase (C), the lesion blends in with the surrounding liver parenchyma and there is no sign of washout. The CEUS diagnosis was FNH. Magnetic resonance imaging (MRI); (D) performed for another reason after three months verifies the diagnosis - lesion with high signal on hepatobiliary phase of contrast-enhanced MRI.