DOUBLE LEFT RENAL VEIN- A RARE ANOMALY

During routine dissection for the students from 2006 - 2011, an adult male cadaver was observed to have double left renal vein. Both the veins were opening into the inferior vena cava. One is preaortic and the other is post aortic channel forming a ring around the aorta called circumaortic, or persistent renal collar. Double left renal vein is a rare developmental anomaly, but carries immense surgical importance. Injury to the postaortic channel during surgery may lead to severe haemorrhage. So profound knowledge is necessary for this variation. The embryological aspect and the clinical importance of the case are discussed here.