Pradhay Girish, Gopidas Geetha S, Karumathil Pullara Sreekumar, Mathew Georgie, Mathew Asha J, Sukumaran Tintu T, Pavikuttan Nanditha, Sudhakaran Rathi
Anatomy, Malabar Medical College Hospital and Research Centre, Calicut, IND.
Anatomy, All India Institute of Medical Sciences, Bibinagar, Hyderabad, IND.
Cureus. 2021 Oct 21;13(10):e18957. doi: 10.7759/cureus.18957. eCollection 2021 Oct.
A single renal artery supplies the kidney in 70% of the population but variation exists in the remaining 30%. Multiple renal arteries (MRA) in different permutations and combinations are one of the many forms of variants. Lack of awareness of multiplicity could have detrimental effects on the outcome of renal surgery. The present study aims at identifying the variants of renal artery based on its origin, multiplicity, and portal of entry in a cohort of people belonging to Southern India and its clinical implications thereof.
Multi-detector CT (MDCT) images of renal vasculature of 100 kidneys from 50 live kidney donors who attended the Department of Nephrology of our institution, from 2016 to 2018 were collected and studied for variations in renal arterial anatomy.
Out of the 18% of kidneys observed with multiple renal arteries, 88.8% had double renal arteries (DRA) and 11.1% had triple renal arteries (TRA). Common types of the double renal arteries were - two hilar arteries (31.3%) and one hilar with one inferior polar artery (IPA, 31.3%). Triple renal arteries types - 50% with one hilar, one superior polar, and one inferior polar; 50% with two hilar and one inferior polar artery. No statistically significant association was noted between the incidence of multiple renal arteries and its laterality (p-value=0.193).
A thorough understanding of the renal artery variants is crucial for safe and efficacious uro-radiological interventional procedures.
70%的人群由单一肾动脉供应肾脏，但其余30%存在变异。不同排列组合的多支肾动脉（MRA）是多种变异形式之一。对多支肾动脉情况缺乏认识可能会对肾脏手术的结果产生不利影响。本研究旨在确定印度南部人群队列中肾动脉的变异情况，包括其起源、分支数量和进入部位，并探讨其临床意义。
收集了2016年至2018年期间在我院肾脏病科就诊的50名活体肾供体的100个肾脏的肾血管多排螺旋CT（MDCT）图像，研究肾动脉解剖结构的变异情况。
在观察到有多支肾动脉的肾脏中，18%的肾脏有双肾动脉（DRA），其中88.8%为双肾动脉，11.1%为三肾动脉（TRA）。双肾动脉的常见类型为——两支肾门动脉（31.3%）和一支肾门动脉加一支肾下极动脉（IPA，31.3%）。三肾动脉类型为——50%为一支肾门动脉、一支肾上极动脉和一支肾下极动脉；50%为两支肾门动脉和一支肾下极动脉。多支肾动脉的发生率与其左右侧性之间未发现统计学上的显著关联（p值=0.193）。
全面了解肾动脉变异对于安全有效的泌尿放射介入手术至关重要。
