Coronary Neovascularity and Fistula Formation in Left Atrial Thrombosis

ABSTRACT

In mitral valve disease, mural thrombus in the left atrium is common, particulary in the atrial appendage in patients with atrial fibrillation. Occasionally, the angiographic sign of "neovascularity" and "fistula" in the region of the left atrial appendage during coronary arteriography has been reported to indicate the presence of thrombus in the left atrium, which might not even be revealed by transthoracic two-dimensional echocardiography. We observed coronary neovascularity and fistula formation in two pateints with mitral stenosis and these findings were due to organized mural thrombus that was adherent to the wall of the left atrial appendage. So we report 2 cases with brief review of literature.