Anterior vascular indentation of the oesophagus.
D000293:Adolescent; D003097:Collateral Circulation; D004947:Esophagus / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D011651:Pulmonary Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011859:Radiography