Table 1.

The prevalence of anatomical variants of the renal arteries, N=402.

Variant	n	Right renal artery	Left renal artery
Typical single renal artery	292 (72.6%)	153	139
Early branching	27 (6.7%)	15	12
Additional renal arteries:
Additional hilar artery	28 (7.0%)	13	15
Superior renal polar artery	19 (4.7%)	6	13
Inferior renal polar artery	35 (8.7%)	13	22
Inferior and superior renal polar arteries	1 (0.3%)	1	0