PMC7649852_01
A contrast-enhanced computed tomography (CT) image obtained 1 month before the detection of the thrombus showed no abnormalities in the ascending aorta.
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CECT images obtained about 1 month earlier had not shown any abnormalities in the aorta (Figure 1); however, the new CT images incidentally revealed a floating mass in the ascending aorta (Figure 2).
A contrast-enhanced CT image revealed a floating mass in the ascending aorta.
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CECT images obtained about 1 month earlier had not shown any abnormalities in the aorta (Figure 1); however, the new CT images incidentally revealed a floating mass in the ascending aorta (Figure 2).
Four-dimensional CT images showed that the mass was attached to the anterior wall of the ascending aorta and moved up and down in sync with the patient's heartbeat: (a) systolic phase; (b) diastolic phase.
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A 36-mm-long part of the mass was moving up and down, and the movement was synchronized with the patient's heartbeat (Figure 3(a), (b) and Video 1, 2).
A hematoxylin-eosin stained specimen showed that the mass was a fibrin thrombus (arrows). The attachment site exhibited atherosclerosis; however, no continuity was found between the thrombus and tunica intima (1x).
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The aortic wall exhibited evidence of atherosclerosis; however, no continuity was found between the thrombus and tunica intima (Figure 4).