There are more anatomical variants in heaven and earth, Horatio, than are dreamt of in our philosophy: the precaval left renal artery.

Although rare and probably overlooked, a pLRAs can be encountered in patients with situs viscerum inversus or presenting a left-sided IVC with hemiazygos continuation. These vessels can cause technical problems during surgery at the left renal hilum and should be specifically searched for in patients with vascular anomalies.