Objectives: A carefully chosen and suitably prepared kidney donor is essential in living-donor kidney transplantation. Computed tomography angiography (CTA) is an effective imaging method for evaluating the renovascular morphology of donor candidates. The aim of this study was to evaluate renal artery variations in kidney donors using CTA and compare the findings with the number of arteries detected during laparoscopic donor nephrectomy.
Materials And Methods: The study included 2,144 living donors who underwent pretransplant renovascular assessment using CTA and laparoscopic donor nephrectomy in our center between August 2012 and October 2018. The number of renal arteries to the donor kidney detected on CTA was compared with the number of arteries discovered intraoperatively.
Results: The mean age of the 2,144 living kidney donors included in the study was 47.19 ± 13.3 (18-87) years. According to CTA findings, 81.1% (n = 1,738) had a single renal artery, 17.2% (n = 369) had double renal arteries, 1.6% (n = 35) had triple renal arteries, and 0.1% (n = 2) had quadruple renal arteries. The same number of renal arteries were detected by CTA and in laparoscopic donor nephrectomy in 97.9% (n = 2,099) of the donors. In the other 2.1% (n = 45), fewer renal arteries were detected intraoperatively compared to their CTA findings. None of the donors included in the study had a greater number of renal arteries discovered during nephrectomy than by CTA.
Conclusion: CTA is a highly accurate method for the evaluation of renovascular variations in donor candidates for living-donor kidney transplantation. However, it must be kept in mind that double or multiple renal artery variations may be detected on CTA in 18.9% of donor candidates.
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