[Agenesis of the ductus arteriosus Botalli and premature closure of the foramen ovale, in combination with mitral valve atresia, hypoplastic left ventricle, transposition of the great arteries, and pulmonary valve atresia (author's transl)].

Agenesis of the Ductus arteriosus Botalli is a rare anomaly, which is known to occur in combination with truncus arteriosus, tetralogy of Fallot with pulmonary valve agenesis and also in simple tetralogy. The authors report on a case, where neither a ductus nor any remnant of it could be found in a complex heart malformation consisting of premature closure of the Foramen ovale, mitral atresia, hypoplastic left ventricle, transposition of the great arteries, pulmonary valve atresia and hypoplastic pulmonary artery. Speculations as to the pathogenesis of this anomaly presume slowing and eventual arrest of the ductal blood flow as a consequence of closure of the Foramen ovale in early fetal life. Thus total involution and disappearance of the distal part of the sixth aortic arch also on the left side seem conceivable.