Variations of Renal Artery in Cadavers

Abstract

Each kidney is usually supplied by a single renal artery which is a lateral branch of abdominal aorta at the level of L1.The arteries supplying the kidneys show variation in the number, source and branching pattern which also include the presence of an accessory or additional and aberrant renal arteries. The additional renal artery towards the lower pole will cross the corresponding ureter and even cause ureteric obstruction. The segmental branches of renal and additional renal arteries are end arteries thus the accidental damage to these arteries can cause ischemia or necrosis and other pathological conditions. The main objective of this study was to note the variations of the arteries supplying the kidneys. An observational study was conducted on thirty kidneys of fifteen cadavers which included the kidneys of both sides. The study was conducted in Department of Anatomy of Nepal Medical College Teaching Hospital during the period between July 2018 to June 2019 and the variations were recorded as (a) single main renal arteries were found in 80% specimens on both sides (b) early division of main renal arteries were found in 16.66 % on both sides (c) origin of main renal arteries were at higher level on left side in 16.66 % (d) presence of additional renal arteries were found in 20% on both sides. This study will be helpful to cryosurgeons and also to radiologists performing various interventional radiological procedures.

Essentials of Renal Vascular Anatomy- A Cadaveric Study

“…[10]. Equal incidence of pre-hilar pattern in 16.66% on both sides, similar to the present study [11]. A higher frequency of incidence on the left side pre hilar pattern than right side is different from our study [12].…”

A rare case of multiple visceral vascular variations around the kidneys: morphological and clinical aspects

“…Accessory renal arteries with increased incidence on the right side are known. 2,3 In up to 5-20% of cases there are accessory superior and inferior polar arteries 4,5 and in up to 10% of cases an ARA is described originating directly from the abdominal aorta, just like in this case. 6 Aberrant polar renal arteries (APRA) constitute an important variety of aberrant renal arteries or ARA and are consistently observed in studies.…”

“…Occurrence of ARA is common, with a reported prevalence of around 25-30%. 5 The renal arteries are paired lateral branches from the abdominal aorta arising approximately at the transpyloric plane just caudal to the origin of the superior mesenteric artery. ARA are frequently encountered distal to the main renal artery and can arise from the aorta and other arteries in the vicinity.…”

“…ARA are frequently encountered distal to the main renal artery and can arise from the aorta and other arteries in the vicinity. 5 , 6 …”

“…ARA are frequently encountered distal to the main renal artery and can arise from the aorta and other arteries in the vicinity. 5,6 The arterial supply to the suprarenal gland is peculiar and does not follow the typical hilar entrance route. The suprarenal gland is usually supplied by the superior, middle, and inferior suprarenal arteries which are branches of the inferior phrenic artery, the abdominal aorta, and the renal artery respectively.…”