Three-year survival in primary cardiac angiosarcoma.

A healthy 18-year-old girl was referred to our hospital for further evaluations of cardiac angiosarcoma. Transthoracic echocardiography showed an immobile 4.6 cm×3.7 cm cardiac mass. The mass was occupying right atrial chamber and partially, invading into annulus of tricuspid valve on transesophageal echocardiography. At surgery, the mass was seen to be protruding from right atrial appendage and adhering to right side of pericardium. The histological findings were consistent with cardiac angiosarcoma and immunological staining was positive for CD34 and CD31. Afterward, although she received radiochemotherapy, she died of metastasis of cardiac angiosarcoma more than three years after surgical resection. J. Med. Invest. 64: 181-183, February, 2017.