I have been diagnosed with an enlarged/dilated abdominal aorta and same with inferior vena cava?

I have been diagnosed with an enlarged/dilated abdominal aorta and same with inferior vena cava. Iliac veins are also noted to be aneurysmal in size (34 on left, 21 on right). I know stress could induce a rupture but could the initial dilation have been caused by stress? Male. Taking no medication.

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