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

Figure 2 Focal nodular hyperplasia in a 16-year-old boy. A: The lesion was hypodense on pre-contrast computed tomography scan, and central scar with much lower density were identified (arrows); B: The lesion was significantly enhanced in the arterial phase with enlarged feeding arteries penetrating into the central scar (arrows); C: The lesion was slightly hyperdense in the portal vein phase; D: The lesion was isodense in the equilibrium phase with delayed enhancement of the central scar; E: Computed tomography angiography (CTA) in the arterial phase showed that the enlarged feeding arteries were distorted, and exhibited a spoke-wheel shaped blood supply (arrows); F: CTA in the portal vein phase showed the draining hepatic vein (arrows).