Incidences and surgical aspects of cardiac myxomas in Bulgaria.

63 patients with cardiac tumors underwent operative treatment between January 1970 and December 1988. Three additional patients refused the operation, despite the large left atrial myxomas and obstruction of the mitral valve, recognized by echocardiography. 62 patients had benign tumors: the only malignant neoplasm was a fibrosarcoma, originating from the right ventricle.