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The left superior pulmonary vein drains from the left superior lobe and the lingula. The two sources converge at the hilum of the left lung. Their relations within the hilum are:
Extending between the left superior pulmonary vein and the pulmonary artery may be found a vestigial fold of Marshall.
The vein passes medioinferiorly within the left lung root to merge with the pericardium of the posterior of the left atrium. Superiorly at this point are the pulmonary arteries.
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