Giant left circumflex coronary artery aneurysm with fistula to the right atrium.

ABSTRACT

Coronary artery fistulae are rare cardiac anomalies with a prevalence of 0.2% of all the patients undergoing coronary angiography. The majority of them are congenital and generally origin from the right coronary artery. Occasionally acquired (mostly iatrogenic) fistulae can develop. Although frequently subclinical, symptoms of angina and congestive heart failure may occur. We present an unusual well-illustrated case of a strongly dilated circumflex coronary artery with formation of two giant aneurysms and fistulous communication towards the right atrium.