Multiple choice Left renal vein crosses the aorta anteriorly, above the superior mesenteric artery anteriorly, below the superior mesenteric artery posteriorly, at the level of superior mesenteric artery anteriorly, below the inferior mesenteric artery Reveal answer Fill a bubble to check yourself B Correct answer Explanation The left renal vein courses anteriorly across the aorta, passing below the superior mesenteric artery before joining the inferior vena cava. This anatomical relationship is clinically relevant during surgical procedures and imaging.