Accessory renal artery

Dr Henry Knipe et al.

Accessory renal arteries are a common variant and are present in ~25% (range 20-30%) of the population.

Sometimes, the term extrarenal artery may be used 2 with a further subclassification of:

  1. aberrant renal artery: supplying the superior and/or inferior pole of the kidney
  2. accessory renal artery: supplying the renal hilum

Accessory renal arteries occur bilaterally in 10-15% of cases and can be quite numerous:

  • single renal artery arising from the abdominal aorta: 70%
  • double renal arteries ~ 20% (range 14-23%)
  • triple renal arteries ~2.5% (range 1-4%)
  • quadruple renal arteries  <1%

Most commonly accessory renal arteries arise from the abdominal aorta and supply to the inferior pole of the kidney although they can rarely arise from:

Abdominal and pelvic anatomy
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Article Information

rID: 25835
Section: Anatomy
Synonyms or Alternate Spellings:
  • Accessory renal arteries
  • Extra renal areteries
  • Aberrant renal artery
  • Aberrant renal arteries
  • Extra renal artery

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Cases and Figures

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    Case 1: MRA
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    Case 2: causing PUJ obstruciton
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    Case 3: bilateral accessory
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    Case 4: with aortic aneurysm
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    Case 5
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    Case 6: bilateral
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