title: Images in cardiovascular medicine. Severe pulmonary artery stenosis caused by extrinsic compression of a calcified circular ring.
authors.affiliation: Gil Heart Center, Gachon Medical School, Incheon, Korea.
authors.forename: Woong Chol
authors.initials: WC
authors.lastname: Kang
authors.forename: Chul Hyun
authors.initials: CH
authors.lastname: Park
authors.forename: Wook-Jin
authors.initials: WJ
authors.lastname: Chung
authors.forename: Seung Hwan
authors.initials: SH
authors.lastname: Han
authors.forename: Tae Hoon
authors.initials: TH
authors.lastname: Ahn
authors.forename: Eak Kyun
authors.initials: EK
authors.lastname: Shin
mesh_terms: D000328:Adult; D001018:Aortic Diseases / Q000000981:diagnostic imaging; D002114:Calcinosis / Q000209:etiology*; D006801:Humans; D006976:Hypertension, Pulmonary / Q000000981:diagnostic imaging*; D008297:Male; D011666:Pulmonary Valve Stenosis / Q000175:diagnosis*; D013902:Radiography, Thoracic; D014397:Tuberculosis, Pulmonary / Q000000981:diagnostic imaging*