Citation, DOI and article data
The pulmonary trunk is approximately 50 mm long and 30 mm wide (most authors use 29 mm in males and 27 mm in females (axial width) as the cut-offs of normal 1,5). It arises as a direct superior continuation of the right ventricular outflow tract, 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.
- differential of an enlarged pulmonary trunk on chest x-ray
- pulmonary artery hypertension
- idiopathic dilatation of the pulmonary trunk
- transposition of the great arteries
- truncus arteriosus
- patent ductus arteriosus
- double outlet left ventricle
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