The aorta from the inferior mesenteric artery to just beyond the bifurcation is seen. Beginning just
below the level of the renal arteries, the aorta is swollen in a fusiform fashion. The posterior surface
has been dissected with some difficulty from the anterior surface of the vertebral column. On the
posterior surface the atherosclerotic media can be seen. The swelling has been sufficient to distort
the angle at which the common iliac vessels arise.