Roentgen aspects of atrial septal defect, ostium secundum.
D054087:Atrial Septum; D018376:Cardiovascular Abnormalities / Q000175:diagnosis*; D002319:Cardiovascular System; D005333:Fetus; D006344:Heart Septal Defects, Atrial; D006801:Humans
CARDIOVASCULAR DEFECTS, CONGENITAL/diagnosis