Focal nodular hyperplasia of the liver seen on MRI

T1-weighted magnetic resonance imaging (MRI) pre-gadolinium shows a hypointense lesion in the left lobe of the liver (top left). Immediately after gadolinium infusion, the arterial phase reveals a hyperintense mass with a hypodense central scar, characteristic of focal nodular hyperplasia (top right). After two minutes, the mass appears nearly isodense with the normal liver, and the central scar is difficult to distinguish (bottom left). After three minutes, the central scar is hyperdense due to delayed accumulation of gadolinium (bottom right).