Case No 012 : What are the findings ?

Two findings : Simple cyst left kidney and retroaortic left renal vein 

• The retroaortic left renal vein 
• The prevalence of this anomaly is about 3%
• can be seen either at the same level as a normal left renal vein or in a more caudal position, sometimes as low as the confluence of iliac veins
• the anterior subcardinal veins regress completely and only the retroaortic left supracardinal vein and its anastomoses with the right supracardinal vein remain to drain the left kidney