MR Imaging of Hepatocellular Adenomas and Differential Diagnosis Dilemma
Figure 7
Focal nodular hyperplasia in fatty liver. (a-b) Axial T2w images without (a) and with (b) fat suppression. In S II slightly hypointense (a) and hyperintense (b) lesions (arrow) with hyperintense central scar (arrowhead). (c-d) Due to significant steatosis of hepatic parenchyma the lesion is hypo- and hyperintense in T1w in- and out-phased images. (e–h) In dynamic evaluation after Gd-BOPTA administration the nodule appears significantly hypervascular in arterial phase (f) and tends to be hyperintense in portal and equilibrium phases. Typically central scar becomes hyperintense in equilibrium phase. (i) Hepatobiliary phase image after 1 hour. The lesion is hyperintense except central scar which is hypointense with stellate aspect.
