“…The majority of published reports describe iatrogenic or traumatic pseudoaneurysms 1 . Only 14 cases to date have described noniatrogenic internal mammary artery aneurysms caused by vasculitides, connective tissue disorders, and rarely idiopathic etiology 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14. Bilateral internal mammary artery aneurysms are even less common, with only two published reports, both describing patients with Marfan syndrome 6, 9…”