Echocardiographic Image of Primary Mediastinal Sarcoma with Pericardial Invasion
Primary mediastinal sarcoma is rare, corresponding to less than 1% of all soft tissue sarcomas and less than 10% of all primary mediastinal tumors.
A 52-year-old man with signs and symptoms of cardiac tamponade underwent echocardiography of the right ventricle, which revealed significant pericardial effusion and an extensive heterogeneous mediastinal mass measuring approximately 15 × 8 cm in the pericardial space in close contact with the right chambers and causing diastolic collapse. The diagnostic hypothesis was a pericardial or mediastinal neoplastic process invading the pericardium. Subsequently, an immunohistochemical study confirmed a high-grade fusiform/pleomorphic cell sarcoma.
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