Deformation of self-expanding stent-grafts complicating endovascular peripheral aneurysm repair.
OBJECTIVE
To demonstrate the deformation of self-expandable stents after endovascular repair of peripheral aneurysms.


RESULTS
The Corvita Endoluminal Graft was used to treat a traumatic false aneurysm of the right subclavian artery and a common iliac artery aneurysm in 2 patients. In the subclavian case, the stent-graft showed a "cigar-shaped" deformation with hemodynamically significant stenoses at the proximal and distal ends at 3 months. In the second case, the same type of deformity was noted only 1 day after implantation. Two months later, the stent-graft occluded, necessitating surgical repair.


CONCLUSIONS
Both cases demonstrate the possibility of stent deformation of self-expanding stent-grafts implanted at arterial sites not subject to external compression.
Sitsen
M E
ME
Department of Vascular Surgery, University Hospital Utrecht, The Netherlands.
Ho
G H
GH
Blankensteijn
J D
JD
D000328:Adult; D017541:Aneurysm, False / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D000792:Angiography; D001783:Blood Flow Velocity; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000295:instrumentation*; D006801:Humans; D017543:Iliac Aneurysm / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D012086:Reoperation; D015607:Stents; D013348:Subclavian Artery; D014057:Tomography, X-Ray Computed; D018616:Ultrasonography, Doppler, Duplex