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Fig. 3B. Hypervascular hepatocellular carcinoma without rapid central washout
and peritumoral coronal enhancement in 70-year-old man. First- to sixth-phase
images obtained with multiarterial phase contrast-enhanced dynamic MRI of
whole liver. Hypervascular hepatocellular carcinoma shows early enhancement in
second (arrow, B) and third (C) phases, but it is seen
as isointense area compared with surrounding liver parenchyma during fourth
(D), fifth (E), and sixth (F) phases. Rapid central
washout and coronal enhancement are not observed. Confirmation of this small
hepatocellular carcinoma was obtained by interval progression in size during
follow-up MRI examinations. Note hypointense mass that was previously treated
percutaneously.