AAA diameter | Description | Chance of rupture in next year | Chance of no rupture |
---|---|---|---|
<3.9 cm | Very small aneurysm | No real risk | Very high |
4.0–4.9 cm | Small aneurysm | About 1 in 100 | About 99 in 100 |
5.0–5.9 cm | Aneurysm | About 1 in 12 | About 11 in 12 |
6.0–6.9 cm | Large aneurysm | About 1 in 6 | About 5 in 6 |
>7.0 cm | Very large aneurysm | About 1 in 4 or higher | About 3 in 4 |
AAA = abdominal aortic aneurysm.