Abstract No. 450 Endovascular treatment of renal artery aneurysms: a single-center experience

Abstract

Renal artery aneurysms (RAA) represents a rare and potentially life-threatening condition with a documented incidence of 0.09% of the general population. Endovascular treatment for RAA is becoming widely accepted over open surgical repair due to decreased morbidity and comparable mortality. We report safety and efficacy of endovascular treatment of RAA. A single-center retrospective review of all endovascular treatment of RAA from November 2008 to September 2019 was performed. Eleven RAA (81.8% F, age 58.4) were identified (Table). Procedural and clinical details, aneurysm characteristics, and outcomes were recorded. Technical success, defined as complete aneurysm exclusion with preservation of renal function (no change in GFR/Cr), 30-day mortality rate, minor and major adverse events (following the Society of Interventional Radiology Clinical Practical guidelines), and re-intervention rates were recorded. The mean follow-up period was 23 months (range, 1–130). Technical success rate was 100%. No re-intervention was required. One 30-day mortality was reported (9%), likely due to the patient’s underlying stage IV renal cell carcinoma and unrelated to intervention. No significant changes in renal function was seen. One minor adverse event was recorded, which was attributed to renal infarctions < 50% without elevation in baseline GFR. Endovascular treatment of RAA is associated with high technical success rates and comparatively low major AEs.Tabled 1Baseline Demographics and Clinical and Procedural CharacteristicsAneurysm (n = 11)Age, mean (SD)58 (16.5)Gender, n, (%) Male1 (10) Female10 (82)Race White4 (36) Black3 (27) Asian1 (9) Hispanic or Latina0 (0) Other2 (18) Unknown1 (9)BMI, kg/m2, mean (SD)31.33 (8)Aneurysm location or site Left renal7 (64) Right renal4 (36)Size (cm)1.5 (0.8–2.9)Aneurysm (n = 11)Embolization agent, n (%) Coils5 (45) Glue2 (18) Stent-assisted coiling3 (27) Balloon-assisted coil1 (9)GFR, pre-embolization60GFR, post-embolization60Creatinine, pre-embolization0.84Creatinine, post-embolization0.89Technical success11 (100)Complications Major0 Minor1 (9)30-day mortality rate1 (9) Open table in a new tab