ISSN: 2041-6792

Clinical Investigation

Renal Arteries Open Access Journals

In classic anatomic descriptions, typical renal vascularization is described as a single renal artery originating from the abdominal aorta at the level of the intervertebral disc between L1 and L2, just below the inception of the superior mesenteric artery. The renal artery enters the renal hilum, branches within the renal sinus and sends out interlobar arteries, which are situated between the renal pyramids in the cortex and take an arched course along the base of the pyramid, between the medulla and the cortex. Here, the interlobar arteries are designated arcuate arteries. Interlobular arteries branch from the arcuate arteries and ascend through the cortex towards the renal capsule. As they travel to the renal capsule, the interlobular arteries give off branches, the afferent arterioles, to each glomerulus. In 2008, the simplest definition of accessory renal artery was introduced by Mir et al. While “normal” renal arteries were described as entering the kidney through its hilum, the accessory renal arteries might enter the renal artery through the hilum or through the surfaces of the kidney. However, from the sixteenth century until today, accessory renal artery terminology has been controversial and unclear. The first description of accessory renal arteries was given in the sixteenth century. In 1564, Eustachi wrote about accessory renal arteries: “These arteries are end-arteries, they are not supplemental or accessory as they are frequently called in textbooks. They do not make anastomotic connections once they enter the kidney.  

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