Pulmonary Artery Stenosis due to External Compression by a Calcified Pericardial Band

Abstract

SUMMARYA 60-year-old male with exertional dyspnea was referred to our hospital. Right pulmonary artery stenosis due to external compression by a calcified band was diagnosed by echocardiography, computed tomography, and magnetic resonance imaging. Percutaneous transluminal angioplasty was conducted in vain due to vascular recoil and failure of stent delivery. Pulmonary bypass grafting was performed successfully. The surgery indicated a probable etiology of chronic pericarditis. This is an extremely rare case of adult pulmonary artery stenosis without a known history of congenital disease, constrictive pericarditis, tuberculosis, or surgery. (Jpn Heart J 2004; 45: 527-533)

Acquired pulmonary artery stenosis in four dogs

“…In humans, acquired forms of PAS are less common than congenital forms. [11][12][13][14][15][16][17] Acquired PAS in humans has been reported secondary to extrinsic causes, including external compression by pulmonary or mediastinal neoplasia 13,18,19 and cysts 20 ; compression from aortic aneurysms, 21,22 infectious mediastinitis, 17 idiopathic pericarditis, 15 and pericardial calcification 23 ; intraluminal conditions such as neoplasia, 11,24 systemic vasculitides, 12,25 pulmonary thromboembolic disease, 26 and idiopathic fibrous intimal proliferation 16,27 ; and valvular abnormalities associated with rheumatic heart disease, 28 malignant carcinoid syndrome, 29 and infective endocarditis. 28 A report 9 of acquired PAS secondary to a heart-base tumor in a Boston Terrier was published approximately 40 years ago.…”

Severe pulmonary artery stenosis by a calcified pericardial ring☆

“…In such cases, the annular calcified lesion shows a variety of compressive symptoms depending on the sites involved such as RVOT, pulmonary artery, and coronary artery [5][6][7]. In our case, the annular calcified ring uniquely encompassed both aorta and pulmonary artery.…”