Pulmonary trunk
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The pulmonary trunk is the solitary arterial output from the right ventricle, transporting deoxygenated blood to the lungs for oxygenation. It is approximately 5 cm50 mm long and 3 cm30 mm wide (most authors use 29mm width as the cut off of normal1).
It arises as a direct superior continuation of the right ventricular outflow track, separated by the pulmonary valve. As it ascends it slants posteriorly and to the left of the ascending aorta. With the ascending aorta, the pulmonary trunk is invested in a common sheath of serous visceral pericardium, anterior to the transverse pericardial sinus.
At the level of the transthoracic plane, the trunk emerges from the fibrous pericardium and divides into the longer right and shorter left pulmonary arteries in the concavity of the aortic arch, anterior to left main bronchus and to the left of the carina.
The left coronary artery passes between the pulmonary trunk of the left and the auricle of the left atrium.
Related pathology
-<![endif]--><!--StartFragment-->The <strong>pulmonary trunk</strong> is the solitary arterial output from the <a title="right ventricle" href="/articles/right-ventricle">right ventricle</a>, transporting deoxygenated blood to the <a title="Lungs" href="/articles/lung">lungs</a> for oxygenation. It is approximately 5 cm long and 3 cm wide.</p><p>It arises as a direct superior continuation of the right ventricular outflow track, separated by the <a title="pulmonary valve" href="/articles/pulmonary-valve">pulmonary valve</a>. As it ascends it slants posteriorly and to the left of the <a title="Ascending aorta" href="/articles/ascending-aorta">ascending aorta</a>. With the ascending aorta, the pulmonary trunk is invested in a common sheath of serous visceral <a title="Pericardium anatomy" href="/articles/pericardium">pericardium</a>, anterior to the transverse pericardial sinus.</p><p>At the level of the <a title="Transthoracic plane" href="/articles/thoracic-plane">transthoracic plane</a>, emerges from the fibrous pericardium and divides into the longer <a title="right pulmonary artery" href="/articles/right-pulmonary-artery">right</a> and shorter <a title="left pulmonary artery" href="/articles/left-pulmonary-artery">left pulmonary arteries</a> in the concavity of the <a title="Aortic arch anatomy" href="/articles/aortic-arch">aortic arch</a>, anterior to <a title="Left main bronchus" href="/articles/left-main-bronchus">left main bronchus</a> and to the left of the <a title="Carina" href="/articles/carina">carina</a>.</p><p>The <a title="left coronary artery" href="/articles/left-main-coronary-artery-1">left coronary artery</a> passes between the pulmonary trunk of the left and the auricle of the <a title="Left atrium" href="/articles/left-atrium-1">left atrium</a>.</p><h4>Related pathology</h4><ul>-<li><a title="ALCAPA" href="/articles/anomalous-left-coronary-artery-from-the-pulmonary-artery">ALCAPA</a></li>-<li><a title="Transposition of the great arteries (TGA)" href="/articles/transposition-of-the-great-arteries">Transposition of the great arteries</a></li>-<li><a title="Truncus arteriosus" href="/articles/truncus-arteriosus">Truncus arteriosus</a></li>-<li><a title="Patent ductus arteriosus (PDA)" href="/articles/patent-ductus-arteriosus">Patent ductus arteriosus</a></li>- +<![endif]--><!--StartFragment-->The <strong>pulmonary trunk</strong> is the solitary arterial output from the <a href="/articles/right-ventricle">right ventricle</a>, transporting deoxygenated blood to the <a href="/articles/lung">lungs</a> for oxygenation. It is approximately 50 mm long and 30 mm wide (most authors use 29mm width as the cut off of normal<sup>1</sup>). </p><p>It arises as a direct superior continuation of the right ventricular outflow track, separated by the <a href="/articles/pulmonary-valve">pulmonary valve</a>. As it ascends it slants posteriorly and to the left of the <a href="/articles/ascending-aorta">ascending aorta</a>. With the ascending aorta, the pulmonary trunk is invested in a common sheath of serous visceral <a href="/articles/pericardium">pericardium</a>, anterior to the transverse pericardial sinus.</p><p>At the level of the <a href="/articles/thoracic-plane">transthoracic plane</a>, the trunk emerges from the fibrous pericardium and divides into the longer <a href="/articles/right-pulmonary-artery">right</a> and shorter <a href="/articles/left-pulmonary-artery">left pulmonary arteries</a> in the concavity of the <a href="/articles/aortic-arch">aortic arch</a>, anterior to <a href="/articles/left-main-bronchus">left main bronchus</a> and to the left of the <a href="/articles/carina">carina</a>.</p><p>The <a href="/articles/left-main-coronary-artery-1">left coronary artery</a> passes between the pulmonary trunk of the left and the auricle of the <a href="/articles/left-atrium-1">left atrium</a>.</p><h4>Related pathology</h4><ul>
- +<li><a href="/articles/differential-of-an-enlarged-pulmonary-trunk-on-chest-radiography">differential of an enlarged pulmonary trunk on CXR</a></li>
- +<li><a href="/articles/idiopathic-dilatation-of-the-pulmonary-trunk">Idiopathic dilatation of the pulmonary trunk</a></li>
- +<li><a href="/articles/transposition-of-the-great-arteries">Transposition of the great arteries</a></li>
- +<li><a href="/articles/truncus-arteriosus">Truncus arteriosus</a></li>
- +<li><a href="/articles/patent-ductus-arteriosus">Patent ductus arteriosus</a></li>
- +<li><a title="Double outlet left ventricle" href="/articles/double-outlet-left-ventricle">Double outlet left ventricle</a></li>
- +<li><a href="/articles/anomalous-left-coronary-artery-from-the-pulmonary-artery">ALCAPA</a></li>
References changed:
- 2. Paul Butler, Adam Mitchell, Jeremiah C. Healy. Applied Radiological Anatomy. (2012) ISBN: 9780521766661 - <a href="http://books.google.com/books?vid=ISBN9780521766661">Google Books</a>
- 3. Keith L. Moore, Arthur F. Dalley, A. M. R. Agur. Clinically Oriented Anatomy. (2013) ISBN: 9781451119459 - <a href="http://books.google.com/books?vid=ISBN9781451119459">Google Books</a>
- 1. Last, R. J., McMinn, R. M. H.. Last's Anatomy, Regional and Applied. (1994) ISBN: 044304662X - <a href="http://books.google.com/books?vid=ISBN044304662X">Google Books</a>
- 4. Nguyen E, Silva C, Seely J, Chong S, Lee K, Müller N. Pulmonary Artery Aneurysms and Pseudoaneurysms in Adults: Findings at CT and Radiography. AJR Am J Roentgenol. 2007;188(2):W126-34. <a href="https://doi.org/10.2214/AJR.05.1652">doi:10.2214/AJR.05.1652</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/17242217">Pubmed</a>
Sections changed:
- Anatomy
Systems changed:
- Chest
- Vascular
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