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Eighteen months after coronary artery bypass grafting with a left internal mammary artery (LIMA) graft, a 58-year-old woman had a change in the character of her angina to include pain in the left arm, especially with upper extremity work, culminating in an episode of prolonged rest pain. Cardiac catheterization revealed retrograde flow through the LIMA graft to the subclavian artery and stenosis of the left subclavian artery at its origin from the aorta. Restoration of antegrade flow through the LIMA graft to the coronary arteries was achieved by a carotid-subclavian bypass resulting in a resolution of symptoms. The evaluation of recurrent angina after LIMA bypass grafting should exclude the possibility of subclavian artery stenosis as well as disease of the native and graft coronary anatomy.

Successful percutaneous removal of an intravascular foreign body requires precise localization of the object so that retrieval devices can be properly positioned. Here we report the successful search for and retrieval of a catheter embolus lost in the ascending aorta during PTCA whose localization was complicated because it was radiolucent.

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