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A 76-year-old woman underwent aortic valve replacement with a 23 mm Carpentier Edwards bioprosthesis for aortic stenosis. Preoperative coronary angiograms were normal. Within three months she developed exertional angina. A multislice computed tomographic (CT) angiogram indicated that part of the valve stent encroached upon the right coronary ostium (panel A, compared to …
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