PMC5733218_01
17 mm x 18 mm mobile obstructing mass within the left ventricular outflow tract attached to the aortic valve and the interventricular septum. LVOT = left ventricular outflow tract, AV = aortic valve, and Ao = aorta.
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fig1
Follow-up TEE confirmed TTE findings (Figures 1 and 2).
Doppler showing functional aortic stenosis and regurgitation.
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fig2
Follow-up TEE confirmed TTE findings (Figures 1 and 2).
Biphasic synovial sarcoma with both spindle- and epitheliod-type features (H&E staining, 400x).
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fig3
Frozen section during the operation confirmed primary cardiac synovial sarcoma with histologic analysis of the cardiac mass revealing a biphasic synovial sarcoma (Figure 3) positive for cytokeratin and CD99 (Figures 4 and 5).
Keratin AE1/AE3 IHC demonstrating the presence of epithelioid components (200x).
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fig4
Frozen section during the operation confirmed primary cardiac synovial sarcoma with histologic analysis of the cardiac mass revealing a biphasic synovial sarcoma (Figure 3) positive for cytokeratin and CD99 (Figures 4 and 5).
Positive CD99 IHC in both epithelioid and spindle cells (200x).
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fig5
Frozen section during the operation confirmed primary cardiac synovial sarcoma with histologic analysis of the cardiac mass revealing a biphasic synovial sarcoma (Figure 3) positive for cytokeratin and CD99 (Figures 4 and 5).
H&E staining showing cardiac myocyte invasion (40x).
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fig6
The neoplasm involved the right coronary aortic valve leaflet and both muscular and membranous parts of the IV septum (Figures 6-8).
H&E staining showing cardiac myocyte invasion (200x).
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fig7
The neoplasm involved the right coronary aortic valve leaflet and both muscular and membranous parts of the IV septum (Figures 6-8).
H&E staining showing cardiac myocyte invasion (400x).
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fig8
The neoplasm involved the right coronary aortic valve leaflet and both muscular and membranous parts of the IV septum (Figures 6-8).