A coronary artery fistula is a rare congenital malformation, which can beco
me symptomatic in adulthood. This report describes a 65-year-old patient wi
th a large aneurysmatic fistula who presented with signs of heart failure.
Angiographically a large aneurysmatic fistula was found running from the le
ft coronary artery to the junction of the superior vena cava and the right
atrium.