Necropsy showed a large tear in the posterior wall of the aorta approximately 12 mm distal to the insertion of ligamentum arteriosum (Figures 1 and 2).
The isthmus segment of the proximal descending aorta is the least mobile portion of the thoracic aorta, being "held down" by its attachment to the pulmonary trunk via the ligamentum arteriosum.
Congenital absence of the pericardium and its relationship to the ligamentum arteriosum
The ductus arteriosus, which becomes the nonfunctional vestige known as the ligamentum arteriosum
, closes a few weeks after birth as does the ductus arteriosus.
4L: Includes nodes to the left of the left lateral border of the trachea, medial to the ligamentum arteriosum
Subaortic nodes are lateral to the ligamentum arteriosum
The two most common aortic arch anomalies that cause airway compression are (1) a double aortic arch and (2) a right aortic arch with an aberrant left subclavian artery and left ligamentum arteriosum
Diagnostic workup in a 2-year-old girl with acute foreign body impaction into the esophagus and frequent respiratory tract infections revealed right descending aortic arch with ligamentum arteriosum
as the cause of extrinsic esophagealtracheal compression.
Typically, it is located at the insertion of the ductus or ligamentum arteriosum
The left recurrent laryngeal nerve then loops under the aortic arch adjacent to the ligamentum arteriosum
and ascends in the tracheoesophageal groove until penetrating the larynx, supplying the intrinsic muscles of the larynx (2).
10,11) Aneurysms often occur at the level of the ligamentum arteriosum
just distal to the take-off of the left subclavian artery.
This phenomenon is most commonly found distal to the left subclavian artery near the ductus arteriosus or ligamentum arteriosum
(Figure 3) (2).