Case 196: Focal Nodular Hyperplasia (FNH)
28 year old woman with left upper quadrant pain with incidental finding on abdominal US.
CT: Central, typical
Arterial phase CT shows a hyperenhancing central FNH with a central hypoattenuating scar. FNH is slightly hypoattenuating to liver parenchyma on portal venous phase with persistent hypodense scar. On equilibrium phase the FNH is isointense to the liver; the central scar is no longer visible because of its delayed enhancement.