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Table 2 Comparison between nephrolithotomy(Mini-PCNL) and flexible reterorenoscopy (RIRS) according to stone characters

From: Flexible ureterorenoscopy (RIRS) vs. Mini- percutaneous nephrolithotomy (MINI-PCNL) for renal stones 20–30 mm a prospective randomized study

  Mini-PCNL (35) RIRS (35) Statistical test (x2) P value
Site no. (%)
Lower calyx
pelvis + Lower calyx
Pelvis
Middle calyx
14 (40)
2 (5.7)
14 (40)
5 (14.3)
9 (25.7)
6 (17.1)
12 (34.3)
8 (22.9)
FET = 5.82 0.21
Size (mm), mean ± SD 20.43 ± 2.2 20.5 ± 2.1 St t = 1.28 0.21
Side no.(%)
Rt
Lt
18 (51.4)
17 (48.6)
12 (34.3)
23 (65.7)
2.1 0.15
Density no.(%)
Opaque
Lucent
28 (80.0)
7 (20.0)
27 (77.1)
8 (22.9)
2.1 0.15