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Fig. 3A —34-year-old man with asymptomatic rapidly enhancing
hemangioma exhibiting discordance due to differences in timing.
Contrast-enhanced sonography was performed after outside CT, which suggested
focal nodular hyperplasia. Sequential contrast-enhanced sonographic frames at
6 seconds (A), 9 seconds (B), and 17 seconds (C) in
arterial phase show marginal enhancement, peripheral nodular enhancement, and
centripetal progression of enhancement sustained for remainder of period of
observation to 300 seconds.
