Rapid spontaneous closure and remodelling of a medium-sized symptomatic congenital coronary artery fistula in an infant before the age of 3 months.

It is controversial to observe or close symptomatic congenital coronary artery fistula in infants. We herein describe a medium-sized symptomatic congenital coronary artery fistula that underwent rapid spontaneous closure in an infant aged <3 months.