Case report: Primary cardiac lymphoma manifesting as superior vena cava syndrome

Figures

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  Figure 1. Chest CT scan demonstrating a large right atrial mass.

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  Figure 2. Baseline transesophageal echocardiography with 3D reconstruction, showing a large tumor arising from the lateral wall of the right atrium (white arrows).

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  Figure 3. Whole-body positron emission tomography/computed tomography (PET/CT) in coronal and sagittal views showing pronounced uptake of fluorine-18 fluorodeoxyglucose in the right atrium, with no other metabolically active lesions.

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  Figure 4. Photomicrographs showing histopathological changes. (A) (H&E × 400): Microscopy shows a diffuse proliferation of large atypical cells. (B) (IHC × 200): CD20 is positive in the large lymphocytes. (C) (IHC × 200): MUM1 is positive in the large lymphocytes. (D) (IHC × 200): Ki67 is approximately 95%.