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fibrous remnant of the ductus arteriosus extending between the aortic arch and the pulmonary trunk.
a small, nonfunctional ligament attached to the superior surface of the pulmonary trunk and the inferior surface of the aortic arch. It is a vestige of the ductus arteriosus.
A fibrous cord extending from the pulmonary artery to the arch of the aorta, the remains of the ductus arteriosus of the fetus.
See also: ligament