Revision 45 for 'Variant renal arteries'

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Renal arteries variants

This case illustrates renal arteries anatomical variants identified on the workup for a potential donor. The right kidney has, besides the main renal artery, a lower polar and upper capsular accessory arteries. The left kidney has three equal sized renal arteries (upper, middle, and lower). These findings are relevant, as the surgeons if considering to transplant one of these kidneys, will probably need to create separate anastomotic sites in the recipient iliac artery, and so increasing the risk of potential complications.

Following publications in this area 1, in our institution we name, when multiple arteries to the kidney, "renal arteries" when they have the same size and "renal and accessory arteries" when there is one dominant and others smaller. 

It is important to bear in mind that accessory renal polar arteries may also arise from other arteries rather the aorta, such as the superior and inferior mesenteric, celiac, middle colic, lumbar, gonadal, iliac, middle sacral arteries, and even from the contralateral renal artery 1.

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