Accessory renal arteries in a Caribbean population: a computed tomography based study

Abstract

IntroductionThe commonest variation to the classic anatomic description of renal arterial supply is the presence of accessory renal arteries. The incidence varies widely according to ethnicity. There is no data on the prevalence of these anomalies in persons of Caribbean ethnicity.MethodsAll CT scans done over two years from July 1, 2010 to June 30, 2012 were retrospectively evaluated. The anatomy of the renal arterial supply was reported from these studies and the anatomy of accessory renal arteries was documented.ResultsThere were 302 CT scans evaluated and accessory renal arteries were present in 109/302 (36.1%) CT scans, 95% confidence interval 30.6%, 41.4%. There were 71/309 (23.5%) patients with accessory arteries on the left and 54/309 (17.9%) had them on the right (p 0.087). Of these, 16 (14.7%) patients had bilateral accessory renal arteries present. The most common origin for the accessory arteries was the abdominal aorta in 108 (99.1%) cases and in 1 case the accessory artery arose from the coeliac trunk. There were 80 left sided accessory renal arteries: 17 (21.3%) upper polar and 27 (33.8%) lower polar arteries. Of 62 right sided accessory arteries, 14 (22.6%) were upper polar and 26 (42%) were lower polar arteries.ConclusionThis is the first population-based report of anatomic anomalies in renal arterial supply in a Caribbean population. These are important findings that may affect vascular and urologic procedures on persons of Caribbean ethnicity.

A cadaveric study of lower polar supernumerary renal arteries. – Embryological and clinical consideration

“…[4] In a computed tomography based study by Johnson et al, 10.02% incidence of left sided lower polar supernumerary renal arteries was seen. [5] This incidence is more than the 4 % incidence seen in present study. A 100 % incidence of aortic origin of supernumerary renal artery is also stated, which is similar to present study.…”

Accessory (multiple) renal arteries – Differences in frequency according to population, visualizing techniques and stage of morphological development

“…1,2 In fact, the vascular pattern is much more complicated and vastly differs in individuals 1,3 and, nowadays, the occurrence of accessory renal arteries (ARA) in a human body is believed to be more representative than previously anticipated. 3,4 The main renal artery was considered to be a single, dominant artery arising from abdominal aorta that entered the renal hilum and branched into segmental arteries. Accessory renal arteries did not branch prior to entry into renal parenchyma.…”

Double Bilateral Renal Artery in Human Fetus

“…variation of renal arteries is extremely important for the vascular clinic and imageologists [3]. The accessory renal arteries range from 18.3% and 36.1% of the cases, on the right side the variation is from 11 to 16% and on the left side from 10 to 23%, and in both sides it can get to 5% [1,4,5,8]. In our study, two double bilateral renal arteries were found.…”

“…In rare cases it can be originated below the understanding about anatomical variations of the renal arteries is important not only for anatomists, but mostly for urological surgeons on the formulation of better conduct on the renal transplants procedures [4,6,7]. The present study had the goal to report a case of renal artery bilateral duplicity in a male fetus.…”

“…Among all its anatomical variations one of the most common is the presence of additional renal arteries [4,5]. This occurrence can become a complicating factor in renal surgeries, and particularly in kidney transplants [4]. A good…”