Flashcards in LIVER Deck (5):
Diagnosis of FNH can be established radiographically with
On unenhanced CT, lesions are typically isoattenuated with a normal liver and may have the characteristic hypoattenuated central scar.
With contrast in the arterial phase, FNHs enhance brightly and become isoattenuated to adjacent parenchyma in the portal phase.
Small feeding vessels may be seen on the periphery of these lesions in the arterial phase. The central scar may enhance on delayed phases.
A well-defined mass with contrast enhancement during arterial phase and rapid washout during portal phase is consistent with
careful rapid washout on portal phase is not the same as central scar
A well-defined mass with internal septae, papillary projections, intratumoral hemorrhage and fine calcifications is consistent with
benign hepatic cyst.
A poorly defined mass located peripherally with low attenuation, area of central necrosis, and cystic degeneration is consistent with
metastatic hepatic lesion.