Figures
Figure 1. (a) Four-chamber view: there is a big heterogeneous multi-lobed mass attached to the posterolateral atrial wall. (b) Transesophageal echo: a huge multi-lobed auricular mass with a large base of implantation to the posterolateral aspect of the left atrial wall is observed.
Figure 2. Transesophageal echocardiography: a 3D zoom mode image view from the left atrium shows a huge multi-lobed auricular mass with a large base of implantation to the posterolateral aspect of the left atrial wall, white arrows. A small sessile mass is seen on the anterior aspect of the atrium, black arrow head.
Figure 3. Cardiac MRI. (a) The tumor was widely attached to the posterolateral wall of the left atrium, white arrows. Another sessile mass in the anterior wall of the left atrium is seen, black arrow. (b) Two-chamber view. The atrial tumor prolapses into the left ventricle during diastole.
Figure 4. Cardiac MRI. Both tumors are isointense in T1-weighted black blood imaging (a). The masses are hyperintense on T2 and T2 STIR sequences (b, c). Delayed enhancement imaging exposed heterogeneous hyperenhancement of the mass (d).
Figure 5. A photograph of the surgical specimen. The mass was heterogeneous and very vascularized.
Figure 6. Primary cardiac undifferentiated pleomorphic sarcoma. (a) Low-power magnification showed hypercellular lesion. (b) High-power magnification recognized cells with marked nuclear pleomorphism and cytologic atypia in fibrous stroma. (c) In other areas, hypocellular lesion in myxoid background (hematoxylin and eosin). (d) Immunoreactivity for vimentin in cell showing diffuse positivity (vimentin, D9).