Abstract
We report a case of a 19-year-old female patient presenting with recurrent episodes of dyspnoea on exertion and presyncope. Cardiac computed tomography (CT) angiography demonstrated an aneurysmal left circumflex artery-to-coronary sinus fistula which was successfully managed using transcatheter closure of the fistulous communication. The present case highlights a rare variety of coronary artery fistula while underscoring the role of cardiac CT angiography in diagnosis and planning of management in such conditions.