AAA

An abdominal aorta ≥ 1.5 times the normal diameter or ≥ 3.0 cm or is defined as aneurysmal.

For abdominal aortic diameters < 2.5 cm, follow-up is generally thought to be unnecessary. Because the rupture of smaller

abdominal aortic aneurysms is less likely, we recommend longer intervals between follow-up examinations.

Follow-up intervals may vary depending on comorbidities and the growth rate of the aneurysm.