Management of Incidental Vascular Findings on Abdominal CT or MRI

Abdominal Aortic Aneurysm (AAA)

Recommended intervals for initial follow-up imaging of ectatic aortas and abdominal aortic aneurysms 

Note: 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.

Iliac Artery Aneurysm

Other Aneurysms

From: Khosa, F., Krinsky, G., Macari, M., Yucel, E. K., & Berland, L. L. (2013). Managing Incidental Findings on Abdominal and Pelvic CT and MRI, Part 2: White Paper of the ACR Incidental Findings Committee II on Vascular Findings. Journal of the American College of Radiology, 10(10), 789–794.