the blood in the pulmonary vein comes from the lungs.
where does the blood in the pulmonary vein come from?
the lungs
pulmonary vein stenosis





























pulmonary vein stenosis is a rare cardiovascular disorder. it is recognized as being the stenosis of one or more of the four pulmonary veins that return blood from the lungs to the left atrium of the heart. in congenital cases, it is associated with poor prognosis and high mortality rate. in some people, pulmonary vein stenosis occurs after pulmonary vein ablation for the treatment of atrial fibrillation. some recent research has indicated that it may be genetically linked in congenital cases.
pulmonary vein stenosis
at the root of the lung, the right superior pulmonary vein lies in front of and a little below the pulmonary artery; the inferior is situated at the lowest part of the lung hilum. behind the pulmonary artery is the bronchus. the right main pulmonary veins (contains oxygenated blood) pass behind the right atrium and superior vena cava; the left in front of the descending thoracic aorta.





























section::::structure.:variation.
pulmonary vein