Problems with the abdominal aorta, such as an aneurysm—a bulging or weakened area in the artery wall—can ... splitting into the left and right common iliac arteries near the pelvis.

Although an aneurysm can occur in any artery of the body, it is most common in the abdominal aorta and the iliac arteries. While the aorta’s diameter normally ranges from 2-3 cm (1 ½ inches), an ...