Surgical Resected Cardiac Angiosarcoma in a 75-Year-Old Patient With a Mitral Valve Bioprosthesis

A 75-year-old patient with a history of mitral and aortic valve replacement surgery 7 years ago, presented with progressive dyspnea. Transesophageal echocardiogram showed a mass suggestive of bioprosthetic mitral valve thrombosis. We present the investigation process using imaging, surgical findings, nuclear medicine, and histopathology that result in the diagnosis of cardiac angiosarcoma.