<unk>  is a hardening of the pulmonary<unk> .
Pulmonary artery sclerosis
Alveolar capillary dysplasia
Pulmonary interstitial emphysema
Pulmonary vein stenosis
Pulmonary hypertension
Pulmonary arteriovenous fistula
Pulmonary capillary hemangiomatosis
Aortic sclerosis