A 70-year-old woman presented with bilateral pulsatile groin masses (Fig. 11.1). Six years ago, she had an elective aorto-bifemoral graft for a 6-cm abdominal aortic aneurysm involving both iliac arteries, from which she made a full recovery. She first found the larger, right-sided mass 4 months ago, and she had noted gradual enlargement since then. She had no symptoms of claudication or leg ischemia. Her past medical history included a myocardial infarction (MI) 18 months ago, but without limitation to her exercise tolerance. On examination, she appeared well. There was a well-healed midline laparotomy scar from the previous operation. Abdominal examination was unremarkable, and there were no bruits on auscultation. Two well-defined expansile masses were palpable in the middle third of the femoral scars, measuring approximately 2 cm on the left and 4 cm on the right. The masses were not tender. There was no evidence of compromise to the distal circulation, and all pulses...
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