Surgery Management of 4 cm size renal staghorn calculus. A Extracorporeal shock wave lithotripsy (ESWL) B Percutaneous nephrolithotomy (PCNL) C Pyeloplasty D Open pyelolithotomy 💡 Explanation Management of 4 cm size renal staghorn calculus. ✓ Correct Answer: B. Percutaneous nephrolithotomy (PCNL)