2022 Volume 31 Issue 1 Pages 35-39
Objectives: To clarify the secure change of neck and leg diameters after EVAR. Methods: 76 patients after EVAR were divided into groupA(n=16) required additional treatments for re-expansion and groupB(n=60) without additional treatments. The annual change in neck and leg diameters were compared between the two groups. Results: There were no significant differences between the two groups in preoperative minor axis of aneurysm, size of neck, bilateral iliac arteries, main body nor bilateral legs of the stent grafts. Postoperative aneurysm became bigger in group A, while kept smaller in group B, showed significant differences between the two groups. The oversize effect was lost by 2 years after surgery in group A, while still presented by 5 years after surgery in group B. But the oversize effect was estimated to disappear by 9 to 10 years after surgery in group B. The oversize effect of the common iliac arteries was disappeared until the first year after surgery. Conclusion: Neck and legs expanded after surgery. Reintervention after EVAR will increase in the future according to the disappearance of the neck oversize effect.
