Branching Patterns of Right Pulmonary Artery in Cardiovascular Anomalies

T. R. Wells Department of Pathology and Laboratory Medicine, Childrens Hospital Los Angeles, and University of Southern California School of Medicine, Los Angeles, California, 90027

M. Takahashi Department of Pediatrics (Cardiology Division), Childrens Hospital Los Angeles, and University of Southern California School of Medicine, Los Angeles, California, 90027

B. H. Landing Department of Pathology and Laboratory Medicine, Childrens Hospital Los Angeles, and University of Southern California School of Medicine, Los Angeles, California, 90027

G. W. Ritchie Department of Pediatrics (Cardiology Division), Childrens Hospital Los Angeles, and University of Southern California School of Medicine, Los Angeles, California, 90027

J. F. Diaz Department of Pathology and Laboratory Medicine, Childrens Hospital Los Angeles, and University of Southern California School of Medicine, Los Angeles, California, 90027

S. M. Ang Department of Pathology and Laboratory Medicine, Childrens Hospital Los Angeles, and University of Southern California School of Medicine, Los Angeles, California, 90027

V. Mahnovski Department of Pathology and Laboratory Medicine, Childrens Hospital Los Angeles, and University of Southern California School of Medicine, Los Angeles, California, 90027

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Abstract

The branch of the right pulmonary artery (RPA) to the upper lobe of the right lung (RUL), the truncus anterior of the RPA, and the pars anterior of the left pulmonary artery, which supplies the left upper lung lobe (LUL), were demonstrated by both dissection of postmortem specimens and angiography for 20 infants and children, by angiography only for 57, and by specimen dissection only for 59 (total 136).

In posteroanterior angiograms, the RUL artery branches from the RPA near the right lateral border of the vertebral column, while the LUL artery or arteries arise more laterally, near the left midclavicular plane. This pattern is reversed in situs inversus (eight patients studied).

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Branching Patterns of Right Pulmonary Artery in Cardiovascular Anomalies

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