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A 71-year-old woman underwent successful elective mitral annuloplasty and coronary-artery bypass grafting, with a left internal thoracic artery graft to her left anterior descending coronary artery and saphenous-vein grafts to her posterior descending and first obtuse marginal arteries. Ten days later, she noticed a painful right parasternal swelling (Panel A) that increased in size over the next 48 hours, without any associated hemodynamic instability. Computed tomography of the chest was performed (Panel B). The diagnosis of a pseudoaneurysm was made. The pseudoaneurysm was suspected to have resulted from trauma to a branch of the right internal thoracic artery from one . . . [Full Text of this Article] |