PMC2698061_01
A. 28-year-old woman with focal nodular hyperplasia with a retraction of the liver capsule. On hepatic helical CT scan during the portal phase, the mass shows an iso-attenuation with the liver parenchyma. The mass has a central fibrotic scar (small black arrows), and the liver capsule adjacent to the mass is retracted (large arrow).. B. Contrast enhanced T1-weighted MR image reveals that the tumor is well enhanced with a minimally enhancing central scar (small black arrows). The lateral surface of the liver parenchyma adjacent to the mass is retracted (large arrow).. C. The hepatic mass of segment 6 is measures approximately 3.5x5.5 cm. The cut surface of the mass reveals a nodular configuration with a central fibrous scar, extending to the liver surface (white arrow). The resected specimen shows a depressed thickened stellate scar (black arrows), slightly eccentrically positioned, with tapering fibrous septa that radiate through the mass, dividing it into multiple lobules.
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F1
The hepatic helical CT scan during the portal phase showed an isodense mass with a hypodense central scar (Fig. 1A). The T2-weighted axial MR image showed a slightly hyperintense mass with a hypointense central scar. The contrast-enhanced T1-weighted axial MR image revealed a marked enhancement of the tumor with a nonenhancing central scar (Fig. 1B). On the cut surface, a central dense fibrotic scar with radiating fibrous septa dividing the lesion into smaller nodules was noted (Fig. 1C).