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Aortic Origin of Right Pulmonary Artery
Case Detail
| Anatomy: Vascular-Lymphatic |
 Joseph Junewick, MD FACR |
| Diagnostic Category: Developmental or Congenital |
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| Created: over 6 years ago |
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| Updated: over 5 years ago |
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| Tags:
PEDS
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| Modality/Study Types:
CT
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Activities:  PDF  ImageJA |
History
Newborn with diminished peripheral pulses.
Case Images
Diagnosis
Aortic Origin of Right Pulmonary Artery
Findings
CT – Axial, multiplanar MIP and 3D volume rendered images show origin of the right pulmonary artery from the aorta; the left pulmonary artery arises from the pulmonary trunk; note the juxtaductal narrowing of the aorta.
Discussion
Origin of the right pulmonary artery from the aorta is a rare anomaly resulting in a left to right shunt, heart failure and if untreated death in early infancy. The lesion may result from two different developmental defects: abnormal septation of the primitive truncus or atresia of the proximal portion of the sixth right aortic arch and persistence of the distal portion as a right ductus arteriosus.
Reference
Rosenberg HS, Hallman GL, Wolfe RR, et al. Origin of the right pulmonary artery from the aorta. Am Heart J (1966); 72(1):106-115.