PMC10009172_01
Imaging examination. Transthoracic echocardiography (A) and cardiac computed tomographic angiography (B-D) revealed a mass located within the right ventricle (black arrow). RV, right ventricle; LA, left atrium; LV, left ventricle; and AO, aorta.
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F1
TTE revealed a mass located within the right ventricle (Figure 1A and Supplementary Video), complicated by moderate tricuspid regurgitation and ascending aortic dilatation with mild aortic valve regurgitation. Chest CT and CCTA showed a large homogeneous density mass consuming most parts of the right ventricle (RV) with protrusion into the RV outflow tract and proximal main pulmonary artery during systole (Figures 1B-D) and relocation during diastole.
The patient underwent a resection of the mass (measuring 110 x 51 x 43 mm).
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F2
The patient underwent a resection of the mass (measuring 110 x 51 x 43 mm, R0 as assessed by histology) (Figure 2) with concomitant tricuspid annuloplasty under cardiopulmonary bypass.
Histology found that myxomatous cells were irregular in shape and sparsely dispersed in the interstitial spaces (red arrow).
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F3
A histological study later confirmed that the myxomatous cells were irregular in shape and sparsely dispersed in the interstitial space (Figure 3).