The renal hilum of the kidney is the recessed central fissure on the medial border through which arteries, veins and ureter enter. The medial border of the kidney is concave in the center and convex toward either extremity. It is directed forward and a little downward. Its central part presents a deep longitudinal fissure, bounded by prominent overhanging anterior and posterior lips. This fissure is named the hilum, or hilus, and transmits the vessels, nerves, and ureter. From anterior to posterior, the renal vein exits, the renal artery enters, and the renal pelvis exits the kidney. From frontal to lateral order, the tubes entering the hilum of kidney are renal vein, renal artery and renal pelvis. The renal hilum was formerly called renal hilus.
Renal Hilum (Hilus)