PMC8541876_01
Transesophageal echocardiography showing echogenic right atrial mass with a possible noted stalk.
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A transthoracic echocardiogram (TTE) confirmed the presence of a large round echogenic right atrial mass with a possible stalk (Figure 1).
Transthoracic echocardiogram (TEE) view of the mass. Myocardial contrast echo findings suggest minimal to no vascularity within the mass.
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Transesophageal echocardiogram (TEE) measured the echogenic mass at 5.5 x 4.6 cm, originating from a tiny stalk over the right atrium appendage (Figure 2).
The resected tumor showed a 6 x 6 x 3.5 cm oval-shaped mass with a small lobulated stalk.
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The resected mass measured 6 x 6 x 3.5 with a small lobulated stalk measuring 2 x 2 cm (Figure 3).
The intraoperative frozen section showed unremarkable skeletal heart muscle with abundant myxoid stroma (a, b). The hematoxylin and eosin histology sections (c, d) showed no cytologic atypia or necrosis. The lesional cells are immunoreactive for calretinin (e) and CD34 immunostains (f).
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Intraoperative section was consistent with a benign lesion (Figures 4(a) and 4(b)). The permanent histology section (Figures 4(c) and 4(d)) and immunostains (Figure 4(f)) showed finding consistent with cardiac myxoma.