Late confluence of left renal vein with Large gonadal vein draining the left renal vein

Thick oblique coronal maximum intensity projection CT image in a 46 year old female donor scheduled for laparoscopic nephrectomy showed late confluence of the left renal vein tributaries with large left gonadal vein (arrow) draining inferior tributary of renal vein (arrowhead). 

It is very important to identify this gonadal vein to prevent complication during laparoscopic nephrectomy.