PT - JOURNAL ARTICLE AU - Love Shah AU - Deeksha Kundapur AU - Shravan Nosib TI - Stolen from the coronaries: Left-to-Left shunts presenting as chest pain syndrome! AID - 10.1136/bcr-2021-242425 DP - 2021 Mar 01 TA - BMJ Case Reports PG - e242425 VI - 14 IP - 3 4099 - http://casereports.bmj.com/content/14/3/e242425.short 4100 - http://casereports.bmj.com/content/14/3/e242425.full SO - BMJ Case Reports2021 Mar 01; 14 AB - We present the case of a 61-year-old woman with chest pain syndrome. Cardiac catheterisation did not reveal atherosclerotic coronary disease. However, a haemodynamically significant fistula connecting the left coronary artery to the left atrial appendage was found to be the culprit through a left-to-left shunting mechanism. In this report, we review the pathophysiology of coronary artery fistulas and the mechanism by which these fistulas may lead to ‘coronary steal syndrome’. Indications for interventional and surgical management are outlined. Ultimately, we suggest the consideration of coronary artery fistulas in the differential diagnosis of patients presenting with chest pain.