Primary biphasic synovial sarcoma of the right atrium.

The article presents a case study of a 46-year-old healthy man presented with asymptomatic third-degree atrioventricular block detected at annual check. Transthoracic echocardiography showed left ventricular ejection fraction and solid mass with homogenous echogenicity arising from the tricuspid atrioventricular junction was diagnosed. Surgery was performed with cardiopulmonary bypass, and the tumor had a smooth surface. The patient had an uneventful post-operative course and was discharged.