Stenosis of the individual pulmonary veins (a rare cause of pulmonary hypertension?).
D000792:Angiography; D002648:Child; D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology*; D008297:Male; D011666:Pulmonary Valve Stenosis / Q000150:complications*; D011667:Pulmonary Veins