Hepatic focal nodular hyperplasia in children: Imaging features on multi-slice computed tomography

Figure 1 Focal nodular hyperplasia in a 2-year-old boy. A: The lesion was hypodense on pre-contrast computed tomography scan; B: The lesion was significantly enhanced in the arterial phase with enlarged feeding arteries (arrows); C: The lesion was hyperdense in the portal vein phase with hypodense central scar (arrows) and fibrous septa; D: The lesion was isodense in the equilibrium phase, and the scar shows delayed enhanced; E: Computed tomography angiography (CTA) in the arterial phase showed that the enlarged feeding artery was distorted with a spoke-wheel shaped blood supply (arrows); F: CTA in the portal vein phase showed the draining vessels directly into the hepatic vein (arrows).