[Surgical Excision of Calcified Amorphous Tumors on Mitral and Aortic Valves:Report of a Case].

Calcified amorphous tumor (CAT) is a nonneoplastic cardiac tumor that can be located in any of the four cardiac chambers, but is predominantly detected on the mitral valve. We report a rare case of CAT originating from the mitral and aortic valves. A 69-year-old woman with end-stage renal disease, hypertension, and diabetes mellitus was referred to our hospital for the evaluation of cardiac masses found incidentally on screening transthoracic echocardiography. She had no symptoms, including fever and neurological deficits, and her blood cultures were negative. Echocardiography revealed mobile masses arising from the mitral and aortic valves. We performed surgical excision and histopathologically diagnosed the masses with cardiac CATs. Mobile and pedunculated CAT frequently causes systemic embolization, and thus, complete surgical excision is recommended in such a case.