The hilum of the kidney is located at which vertebral level?

Explanation

## Anatomical Level of Renal Hilum **Key Point:** The hilum of the kidney is classically located at the level of the **L1 vertebra**. This is the standard landmark cited in Gray's Anatomy (Standring, 41st ed.) and BD Chaurasia's Human Anatomy. The hilum is the medial concave depression through which the renal artery, renal vein, lymphatics, and ureter pass. **High-Yield Vertebral Levels in Renal Anatomy:** - **T12–L1** = Upper pole of kidney - **L1** = Hilum of kidney (transpyloric plane) - **L2–L3** = Lower pole of kidney **Why the other options are incorrect:** - **L2–L3 (Option A):** This corresponds to the lower pole of the kidney, not the hilum. The original explanation incorrectly placed the hilum here. - **L3–L4 (Option B):** Too low; this is below the kidney entirely. - **L4–L5 (Option C):** This is the level of the aortic bifurcation, far below the renal hilum. **Clinical Pearl:** The transpyloric plane (L1) is a key surgical landmark — it passes through the renal hila, the pylorus of the stomach, the neck of the pancreas, the duodenojejunal flexure, and the fundus of the gallbladder. During nephrectomy or renal transplantation, the hilum at L1 is the critical zone for controlling the renal artery, renal vein, and ureter. **Anatomical Note:** The right kidney lies slightly lower than the left (due to hepatic displacement), but both renal hila are conventionally described at the L1 vertebral level. [cite: Standring Gray's Anatomy 41e Ch 75; BD Chaurasia Human Anatomy Vol 2]