The best calyceal tract approach for treating renal stones with percutaneous nephrolithotomy.

Objective: To compare the perioperative outcomes of percutaneous nephrolithotomy (PCNL) performed via the upper middle, and lower calyces.

Material And Method: The authors retrospectively reviewed 92 renal units in 92 patients who required PCNL at our institution between 2006 and 2010. Patients with partial and full staghorn stones with total stone size > or = 2 cm were included in the present study.