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  • Title: Comparison of Percutaneous Nephrolithotomy and Retrograde Intrarenal Surgery in Treating 20-40 mm Renal Stones.
    Author: Atis G, Culpan M, Pelit ES, Canakci C, Ulus I, Gunaydin B, Yildirim A, Caskurlu T.
    Journal: Urol J; 2017 Mar 16; 14(2):2995-2999. PubMed ID: 28299761.
    Abstract:
    PURPOSE: To compare the outcomes of percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) in treating renal stones between 20 and 40 mm in diameter. MATERIALS AND METHODS: 146 patients, who were treated with RIRS and 146 patients, who were treated with PCNL for renal stones between 20 and 40 mm in diameter were compared retrospectively using a matched-pair analysis. The operative and post-operative outcomes of both groups were analyzed retrospectively. RESULTS: The mean age, gender, body mass index and stone laterality were similar between the groups. The mean stone size was 28.39 ± 4.67 mm for the PCNL group and 25.08 ± 6.07 mm for the RIRS group (P =.21). The mean operative times were statistically longer in the RIRS group, whereas the fluoroscopy times, hospitalization times and post-operative visual analogue scores were statistically higher in the PCNL group. The stone- free rates (SFR) after a single procedure were 91.7% in the PCNL group and 74% in the RIRS group (P = .04). After auxiliary procedures, the overall SFRs reached 94.4% for the PCNL group and 92.3% for the RIRS group (P = .52). No major complications were observed for both groups. Minor complication (Clavien 1-3) rates were 6.8% and 3.4% for the PCNL and RIRS group, respectively (P =.18). CONCLUSION: RIRS has some advantages over PCNL such as shorter hospitalization times, shorter fluoroscopy times and less post-operative pain in treating renal stones between 20 and 40 mm in diameter. However, PCNL has a higher SFR with only a single session.
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