“…7,10,11 Thus, we can only speculate that the rapid growth of the AAA might have been induced by the toxic effects of chemotherapy, even though there is only an anecdotal report to support this assumption. 9 Acute cardiac toxicity of 5-fluorouracil is a well-known adverse event, 12 but thrombus formation in a normal aorta 13,14 and aortic dissection 15 represent other and very rare cardiovascular adverse events of chemotherapy. The disturbed synthesis of DNA, collagen, and elastin, release of cytokines, inhibition of smooth muscle cell proliferation, and induction of metalloproteinases are so far predominately hypothetically formulated effects of chemotherapeutics that might induce AAA development.…”