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The right main renal artery arises at L2 level.
The left main renal artery arises at L3 level.
The isthmus is supplied by a single artery arising, directly from aorta.
Multiple accessory renal arteries are seen to arise from the aorta as follows:
- right accessory polar artery 1 – arises at D12 level and supplies upper pole
- right accessory hilar artery 2 – arises at L3 level and supplies hilum
- left accessory polar artery 1 – arises at L1 level and supplies upper pole
- left accessory polar artery 2 – arises at L2 level and supplies mid pole
- left accessory polar artery 3 – arises at L5 level and supplies lower pole