Patent ductus
arteriosus (PDA) is a common congenital cardiac lesion
usually encountered one side. Rarely both left and right aortic arches may
persist giving rise to bilateral PDA.
Embryologically
the distal pulmonary arteries arise from respective lung buds, which join the
proximal portion of the sixth aortic arch while the main pulmonary artery is
derived from pulmonary arterial portion of truncoaortic sac.
We recently
encountered a patient with bilateral PDA along with non -confluent pulmonary
arteries. This patient also had a double outlet right ventricle (DORV),
pulmonary atresia, right aortic arch and bilateral superior vena cavae (SVC),
further adding to its rarity.
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