<prompt> True about left renal veinPosterior and inferior to superior mesenteric aeryPosterior and superior to superior mesentric aeryAnterior and inferior to superior mesenteric aeryAnterior and superior to superior mesentric aery  <response>: Left Renal vein The left renal vein courses between the aoa and superior mesenteric aery to join the inferior vena cava. The left renal vein passes in front of Aoa The left gonadal vein will drain into to left renal vein. The right gonadal vein drains directly into the inferior vena cava. Ref - BDC 6e vol2 pg316 