Cystic medionecrosis of the pulmonary arteries.
D000328:Adult; D000783:Aneurysm / Q000473:pathology; D001015:Aortic Arch Syndromes / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009336:Necrosis; D011651:Pulmonary Artery / Q000473:pathology*; D013902:Radiography, Thoracic; D014652:Vascular Diseases / Q000473:pathology*