Focal nodular hyperplasia

Case contributed by Bruno Di Muzio
Diagnosis certain


Referred for further workup of incidental liver lesion.

Patient Data

Age: 25 years
Gender: Female

Liver ultrasound


Ultrasound depicting a liver segment VI/VII hyperechoic mass with central vasculature that appears to irradiate from the hypoechoic lesion center ("spoke wheel appearance"). 

MRI Liver


Well-defined segment VI/VII liver lesion that has mild elevated T2 signal, no fat content, and is hypervascular on arterial phase and tends to get homogeneous with the background parenchyma. On Primovist delayed phase it up takes the contrast and has a slightly elevated signal compared to the background liver. The scar is hyperintense on T2 and does not retain contrast. 

Case Discussion

Typical imaging features of focal nodular hyperplasia (FNH)

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