## Anatomical Relations of the Kidney ### Correct Statements **Key Point:** The hilum of the kidney is the concave medial border where vessels, nerves, and the ureter enter/exit. It lies at the level of the **L1 vertebra** (approximately at the transpyloric plane). **High-Yield:** The **upper pole** of the right kidney typically lies at the level of the **T12 rib** (12th rib), while the left upper pole is slightly lower due to the spleen's presence. **Clinical Pearl:** The left kidney is positioned **more laterally** (not medially) than the right kidney because the spleen occupies the left upper quadrant, pushing the left kidney downward and laterally. The right kidney sits higher and more medial due to the liver's mass. ### The Incorrect Statement The **renal vein lies anterior to the renal artery** at the hilum, not the other way around. The anatomical sequence at the hilum from anterior to posterior is: 1. Renal vein (most anterior) 2. Renal artery (middle) 3. Ureter (most posterior) This is remembered by the mnemonic **"VAU"** (Vein-Artery-Ureter) from anterior to posterior. ### Summary Table | Feature | Right Kidney | Left Kidney | | --- | --- | --- | | Upper pole level | T12 rib | L1 vertebra | | Lower pole level | L3 vertebra | L3 vertebra | | Position | Higher, more medial | Lower, more lateral | | Hilum level | L1 vertebra | L1 vertebra | | Anterior relation | Liver, duodenum | Spleen, stomach | **Mnemonic:** **VAU** — Vein (anterior), Artery (middle), Ureter (posterior) at the renal hilum.
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