Extreme left atrial enlargement causing upward displacement and compression of the right pulmonary artery.
Mandalay
A
A
Joseph
G
G
D000293:Adolescent; D006332:Cardiomegaly / Q000150:complications*; D006325:Heart Atria; D006801:Humans; D008297:Male; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D011859:Radiography