Right pulmonary artery
Citation, DOI, disclosures and article data
At the time the article was created Craig Hacking had no recorded disclosures.
View Craig Hacking's current disclosuresAt the time the article was last revised Joachim Feger had no financial relationships to ineligible companies to disclose.
View Joachim Feger's current disclosures- Right pulmonary artery (RPA)
- Right main pulmonary artery
The right pulmonary artery (RPA) is one of the branches of the pulmonary trunk, branching at the level of the transthoracic plane of Ludwig. It is longer than the left pulmonary artery and courses perpendicularly away from the pulmonary trunk and left pulmonary artery, between the superior vena cava and the right main bronchus. As it courses to the right it has an almost horizontal path inferior to the aortic arch and carina, anterior to the esophagus and right main bronchus, before dividing just before entering the superior aspect of the hilum of the right lung into the upper and lower trunks:
the upper lobar artery (truncus anterior) supplies the right upper lobe and courses medial to the right main bronchus; it is smaller than the descending interlobar artery
the right interlobar artery supplies the right middle lobe and right lower lobe and courses lateral to the right main bronchus 4
The normal upper limit in size can be variable but is usually taken at around 20 mm 3.
Clinical importance
the right interlobar artery typically measures 16 mm in males and 15 mm in females on a PA chest radiograph 5
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Related pathology
References
- 1. Last's anatomy, regional and applied. Churchill Livingstone. ISBN:044304662X. Read it at Google Books - Find it at Amazon
- 2. Moore KL, Agur AMR, Dalley AF. Clinically oriented anatomy. LWW. ISBN:1451119453. Read it at Google Books - Find it at Amazon
- 3. Bozlar U, Ors F, Deniz O et al. Pulmonary Artery Diameters Measured by Multidetector-Row Computed Tomography in Healthy Adults. Acta Radiol. 2007;48(10):1086-91. doi:10.1080/02841850701545755 - Pubmed
- 4. Stephanie Ryan, Michelle McNicholas, Stephen J. Eustace. Anatomy for Diagnostic Imaging. (2011) ISBN: 9780702029714 - Google Books
- 5. Bogati S, Maharjan S, Chand RB. Measurement of right pulmonary artery diameter on normal chest radiographs. Journal of Chitwan Medical College. 2018;8(24):44-48. ISSN 2091-2889
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- Ring around artery sign
- Pulmonary artery intramural haematoma
- Middle mediastinum
- Right lower lobe collapse
- Right main bronchus
- Waterston shunt
- Idiopathic dilatation of the pulmonary trunk
- Medical abbreviations and acronyms (R)
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- Aberrant left pulmonary artery
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- Pulmonary trunk
- Left pulmonary artery
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