“On Sept. 12, 2003 — Popular TV and movie star John Ritter had died from an undetected flaw in his heart called an aortic dissection. An aortic aneurysm is an abnormal bulge that occurs in the wall of the major blood vessel (aorta) that carries blood from your heart to your body. Aortic aneurysms can occur anywhere in your aorta and may be tube-shaped (fusiform) or round (saccular). Aortic aneurysms include: Abdominal aortic aneurysm.  The aortic bifurcation is the point at which the abdominal aorta bifurcates (forks) into the left and right common iliac arteries. External iliac artery supplies the part of the abdominal wall and the lower limb. It has three major branches: inferior epigastric, deep circumflex iliac and femoral arteries.“

MAYO CLINIC