Department of Urology, Istinye University Medical Faculty, Istanbul, Turkey,
Department of Radiology, Medical Park Hospital, Antalya, Turkey.
Urol Int. 2020;104(7-8):637-640. doi: 10.1159/000507796. Epub 2020 May 14.
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.
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.
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.
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.
精心挑选和适当准备的肾脏供体对于活体供肾移植至关重要。计算机断层血管造影（CTA）是评估供体候选者肾血管形态的有效成像方法。本研究的目的是使用 CTA 评估肾脏供体的肾动脉变异，并将这些发现与腹腔镜供肾切除术期间检测到的动脉数量进行比较。
该研究纳入了 2144 例于 2012 年 8 月至 2018 年 10 月在我中心接受移植前肾血管评估的活体供者，这些供者均接受了 CTA 和腹腔镜供肾切除术。将 CTA 上检测到的供体肾脏的肾动脉数量与术中发现的动脉数量进行比较。
本研究纳入的 2144 例活体供肾者的平均年龄为 47.19 ± 13.3（18-87）岁。根据 CTA 结果，81.1%（n=1738）有单支肾动脉，17.2%（n=369）有双支肾动脉，1.6%（n=35）有三支肾动脉，0.1%（n=2）有四支肾动脉。在 97.9%（n=2099）的供者中，CTA 和腹腔镜供肾切除术检测到相同数量的肾动脉。在另外 2.1%（n=45）的供者中，术中检测到的肾动脉数量少于 CTA 结果。本研究中没有供者在肾切除术中发现的肾动脉数量多于 CTA。
CTA 是评估活体供肾移植供体候选者肾血管变异的一种高度准确的方法。然而，必须记住，18.9%的供体候选者可能在 CTA 上检测到双支或多支肾动脉变异。
