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Case Reports
Journal Article
Renal Stent Crushed During Open Aneurysmorrhaphy for Endoleak After Fenestrated EVAR.
Journal of Endovascular Therapy 2016 June
PURPOSE: To report a complication of renal stent crushing during open aneurysmorrhaphy performed 10 years after fenestrated endovascular aneurysm repair (FEVAR).
CASE REPORT: A 67-year-old male patient underwent elective FEVAR of a juxtarenal aortic aneurysm. Uncovered balloon-expandable stents were placed through the fenestrations for the superior mesenteric and right renal arteries; the left renal artery received a Jostent covered balloon-expandable stent. The uncovered right renal stent was noted to be crushed on the first imaging after FEVAR, but was left untreated; the right kidney was thereafter significantly smaller than the left. Over several years, the aneurysm expanded, and type II endoleak involving the lumbar arteries was embolized with coils 7 years after FEVAR. Despite this, the aneurysm continued to enlarge and reached a diameter of 12.8 cm. Open aneurysmorrhaphy and selective ligation of lumbar arteries was performed 10 years after FEVAR. The first surveillance imaging after aneurysmorrhaphy demonstrated a new finding of a crushed left renal stent, which was presumed to be related to surgical instrumentation. The stent was successfully redilated percutaneously, and renal function remained stable. Computed tomography demonstrated a normal appearance of the left renal covered stent after re-expansion. Doppler ultrasound after 7.5 months showed normal renal perfusion.
CONCLUSION: Balloon-expandable visceral artery stents are susceptible to crush injury during aortic surgery. Consideration should be given to early imaging after such surgery in FEVAR patients.
CASE REPORT: A 67-year-old male patient underwent elective FEVAR of a juxtarenal aortic aneurysm. Uncovered balloon-expandable stents were placed through the fenestrations for the superior mesenteric and right renal arteries; the left renal artery received a Jostent covered balloon-expandable stent. The uncovered right renal stent was noted to be crushed on the first imaging after FEVAR, but was left untreated; the right kidney was thereafter significantly smaller than the left. Over several years, the aneurysm expanded, and type II endoleak involving the lumbar arteries was embolized with coils 7 years after FEVAR. Despite this, the aneurysm continued to enlarge and reached a diameter of 12.8 cm. Open aneurysmorrhaphy and selective ligation of lumbar arteries was performed 10 years after FEVAR. The first surveillance imaging after aneurysmorrhaphy demonstrated a new finding of a crushed left renal stent, which was presumed to be related to surgical instrumentation. The stent was successfully redilated percutaneously, and renal function remained stable. Computed tomography demonstrated a normal appearance of the left renal covered stent after re-expansion. Doppler ultrasound after 7.5 months showed normal renal perfusion.
CONCLUSION: Balloon-expandable visceral artery stents are susceptible to crush injury during aortic surgery. Consideration should be given to early imaging after such surgery in FEVAR patients.
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