The unique combination of heterotaxy, an equivalent of a univentricular heart, TGA and interrupted aortic arch makes this case unclassifiable.

This is a complex cardiac malformation because anatomical repair is not achievable, as this is an equivalent of a univentricular heart. The main functional ventricle is a left-type one, which is better to stand systemic pressure on the long term. Ductus arteriosus must remain open after birth, because it feeds descending thoracic aorta in this case.

It is of paramount importance to rule out associated anomalies which may complicate the overall prognosis, such as Down syndrome and DiGeorge syndrome. 

Courtesy of both Dr F. Cuillier and Dr L-A. Arsac, who both significantly contributed to this case.