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  • Title: How Effective Is Retrograde Semirigid and Flexible Ureteroscopic Lithotripsy for the Treatment of Large Ureteral Stones Equal of or Greater than 15 mm? Results from a Single Center.
    Author: Kozyrakis DG, Kratiras ZK, Perikleous SK, Zarkadas AP, Chatzistamoy SE, Karagiannis DK, Solinis IT.
    Journal: Urol Int; 2019; 103(1):74-80. PubMed ID: 30999318.
    Abstract:
    PURPOSE: To present the results and complications of retrograde ureteroscopic lithotripsy for treatment of large ureteral stones. METHODS: Nineteen patients were treated for ureteral stones ≥15 mm detected in CT or plain KUB film. Endoscopy was performed with either a semirigid or flexible ureteroscope. Stone fragmentation was performed using a 30 W Holmium laser. RESULTS: The mean stone size was 20.7 mm (range 15-30). The mean duration of the operation was 82 min (45-140). Measures to prevent retropulsion of fragments into the kidney were not routinely applied. A subsequent RIRS during the same session was necessary in 2 cases. After a single procedure a stone free state was achieved in 15 cases (78.9%), while 4 others required a second session (ESWL or second ureterolithotripsy, 2 cases each). In only 1 patient, the stone-free state was not achieved after a 1.2 procedure per patient (overall success rate 94.7%). The mean duration of hospitalization was 1.9 days (range 1-5). Three patients experienced postoperative pyelonephritis and 2 others prolonged hematuria. CONCLUSION: Endoscopic lithotripsy is safe and effective in treating large ureteral stones. After a single endoscopic procedure, approximately 4 out of 5 patients are expected to become stone free. This rate increases to 95% with a second session of lithotripsy.
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