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Figure 1 (A) A mass filling the right atrium (apical five-chamber view). (B) The mass hyper-enhanced with echocardiographic contrast, compared with the adjacent myocardium. (C) There was no enhancement of the mass or the adjacent myocardium after a high-mechanical index impulse destroyed contrast bubbles, ruling out "false-positive perfusion" of the mass. (D) The biopsy specimen diagnosis was follicular thyroid carcinoma. The blood vessels are stained with CD31 antibody. (E) Perfusion curves of video intensity over time demonstrated greater values for A and ß for the mass than for the adjacent myocardium.
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