Valvar aortico-ventricular tunnel: an insight into the development of the great arteries.

Aorto-left ventricular tunnel is a rare congenital heart lesion, with an incidence of <0.1% of all CHD. We present a unique case of a valvar aorto-left ventricular tunnel in a neonate, in belief that our findings may shed some light on the developmental origins of this lesion.