Unusual Case of AneuRx Stent-Graft Failure Two Years After AAA Exclusion

Purpose: To present a case of type-III endoleak due to separation of modular components and suture breakage after abdominal aortic aneurysm (AAA) repair with the AneuRx stent-graft. Case Report: A 58-year-old man with a 78-mm AAA underwent successful aneurysm exclusion with an AneuRx stent-graft in 1998. Because the bifurcated component migrated during deployment, an additional aortic cuff was deployed to extend the stent-graft proximally to just below the renal arteries. On routine evaluation with computed tomography at 2 years postimplantation, a type-III endoleak with anterior displacement of the stent-graft was discovered. Angiography revealed separation of the aortic cuff from the stent-graft body. The aneurysm, which had decreased to 70 mm at 6 months, had enlarged to 80 mm in diameter. The patient underwent surgical AAA repair with removal of the stent-graft. Macroscopic examination showed suture breakage and separation of the stent rings and the graft material. Conclusions: This late complication of the AneuRx endograft underscores the need for frequent imaging surveillance in all patients undergoing endoluminal AAA repair.

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Unusual Case of Late Thoracic Stent Graft Failure After Cardioversion

The Annals of Thoracic Surgery ◽

10.1016/j.athoracsur.2005.04.087 ◽

2006 ◽

Vol 81 (5) ◽

pp. 1875-1877 ◽

Cited By ~ 2

Author(s):

Anthony D. Caffarelli ◽

Filip Banovac ◽

Stephen C. Cheung ◽

Dominick Fleischmann ◽

R. Scott Mitchell

Keyword(s):

Stent Graft ◽

Graft Failure ◽

Unusual Case ◽

Thoracic Stent Graft

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Clinical consequence of bare metal stent and stent graft failure in femoropopliteal occlusive disease

Journal of Vascular Surgery ◽

10.1016/j.jvs.2013.05.094 ◽

2013 ◽

Vol 58 (6) ◽

pp. 1525-1531 ◽

Cited By ~ 10

Author(s):

Shant M. Vartanian ◽

Paul C. Johnston ◽

Joy P. Walker ◽

Sara J. Runge ◽

Charles M. Eichler ◽

...

Keyword(s):

Stent Graft ◽

Graft Failure ◽

Bare Metal Stent ◽

Occlusive Disease ◽

Clinical Consequence ◽

Bare Metal ◽

Metal Stent

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Combined Corrosion and Fatigue Degradation of Nitinol Implants

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.712-715.474 ◽

2013 ◽

Vol 712-715 ◽

pp. 474-477

Author(s):

Stepan Major ◽

Stepan Hubalovsky ◽

Josef Šedivý

Keyword(s):

Stent Graft ◽

Graft Failure ◽

Chemical Etching ◽

Surface Preparation ◽

Corrosive Environment ◽

Stent Grafts ◽

Corrosion Stability ◽

Aggressive Environment ◽

Wide Range ◽

Significant Application

Nitinol is metal alloy of nickel and titanium. It has wide range of applications. The most significant application is production of self-expanding stent-grafts, which are commonly used in vascular surgery. Stent-graft manufactures are confronted with two basic requirements: stents must have an infinite life; stents must be made of the thinnest wires us possible. Stent-graft failure or device fatigue remains major concern for stent-graft manufactures and researches. The stent-grafts are mechanically loaded, and also the device is placed in very aggressive environment. The corrosion stability of Nitinol is strongly dependent on the surface preparation: grinding, polishing, chemical etching. The paper deals with fatigue degradation of stent-grafts in corrosive environment.

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Late Renal Allograft Rupture Associated with Cessation of Immunosuppression following Graft Failure

Case Reports in Transplantation ◽

10.1155/2011/512893 ◽

2011 ◽

Vol 2011 ◽

pp. 1-5 ◽

Cited By ~ 2

Author(s):

Sumayah Askandarani ◽

Noura Aloudah ◽

Hanan Al Enazi ◽

Khaled O. Alsaad ◽

Abdulrahman Altamimi

Keyword(s):

Graft Failure ◽

Unusual Case ◽

Renal Allograft ◽

Time Interval ◽

Antibody Mediated Rejection ◽

Immunosuppressive Medications ◽

Peritubular Capillaries ◽

Long Time ◽

Cellular Rejection ◽

Marked Drop

A 29-year-old man developed chronic allograft nephropathy 63 months after renal transplantation. He became symptomatic with advanced chronic graft failure; his immunosuppressive medications were reduced and he was commenced on haemodialysis. Two months following the withdrawal of immunosuppression, he presented with abdominal pain, haematuria, and a marked drop in haemoglobin. The patient was taken to the operating room, where the renal allograft was found to be ruptured, and graft nephrectomy was subsequently performed. Histological examination of the graft specimen showed severe haemorrhagic acute vascular cellular rejection in a background of marked chronic allograft vasculopathy. Immunostaining for C4d showed diffuse, strong, linear circumferential staining of the peritubular capillaries, indicating a concurrent antibody-mediated rejection. We report herein an unusual case of spontaneous renal allograft rupture that occurred long time after transplantation due to severe acute rejection following cessation of immunosuppressive medications for advanced chronic allograft failure. To the best of our knowledge, the time interval between transplantation and the rupture of this allograft is the longest of those reported in the literature.

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