Non-invasive diagnosis of a congenital coronary artery fistula.

This report describes a large congenital coronary artery fistula of the left circumflex artery draining into the coronary sinus in a 46 year old woman. The fistula was initially diagnosed by cross-sectional and transesopha-geal echocardiography using multiplane probe. Additionally, the entire course of the fistula was visualised in electron beam tomography. Angiography confirmed echocardiographic and tomographic findings.