Aneurysmal change of the ductus arteriosus after prostaglandin E1 administration for pulmonary atresia: demonstration with magnetic resonance imaging.

We report a case of pulmonary atresia in which the ductus arteriosus underwent aneurysmal dilatation after infusion of prostaglandin E1 incorporated in lipid microspheres. To our knowledge this is the first case in which this rare morphological change has been demonstrated with the noninvasive method of magnetic resonance imaging.