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Purpose: The aim of the study was to compare the outcomes of simultaneous supine percutaneous nephrolithotomy (sPCNL) with semi-rigid ureteroscopic lithotripsy (SR-URSL) (Group A) and SR-URSL (Group B) for treating large proximal ureteral calculus. Materials and Methods: Between January 2015 and April 2019, all patients with large proximal ureteral stones (≥10 mm) who underwent simultaneous sPCNL with SR-URSL or SR-URSL at three medical centers were retrospectively included. Two surgical options were provided based on patients and doctors' decision. The intraoperative and postoperative results, including operating time, hospital stay, need for auxiliary procedures, and complications, were compared between the two groups. Stone-free clearance was defined as the absence of fragments or a single fragment of ≤4 mm on standard radiography 1 month after surgery. Results: A total of 38 and 27 patients were included in Groups A and B, respectively. The mean stone size was 21 mm and 18.2 mm and stone-free rate (SFR) was 97% and 33% in Groups A and B, respectively. Larger ureteral stones (P < 0.001), longer operation time (P < 0.001), prolonged hospitalization (P < 0.001), higher SFR (P < 0.001), and less patients requiring auxiliary procedures (P < 0.001) were observed in Group A. No significant difference regarding complications was observed between groups (P = 0.1). Conclusion: Simultaneous sPCNL with SR-URSL is a feasible and effective treatment for large proximal ureteral stones. Even though larger stone size was observed, simultaneous sPCNL with SR-URSL results in significantly higher SFR and reduced need for auxiliary procedures, without major complications, compared to SR-URSL alone. More clinical studies are required to confirm the outcomes of the present study. [ABSTRACT FROM AUTHOR]

Purpose: To share our multicenter experience using a safe and effective method for treating large proximal ure-teral calculus by simultaneous supine percutaneous nephrolithotomy (sPCNL) and retrograde ureterolithotripsy (URSL) in the Galdakao-modified supine Valdivia position.Materials and Methods: Between December 2014 and August 2017, all patients with large proximal ureteral stones (> 15 mm) who underwent simultaneous sPCNL and retrograde URSL at three medical centers were retro-spectively reported. The ureter stone was pushed back (retrograde) with the ureteroscope and was retrieved using forceps with a nephroscope through an Amplatz sheath. Surgical methods and outcomes were described to improve our experience and management of large proximal ureteral calculi.Results: A total of 31 patients underwent simultaneous sPCNL and retrograde URSL. The mean patient age, stone size, operating time, and postoperative hospital stay were 57 years (range, 32-74 years), 20.1 mm (range, 15.0-37.9 mm), 81 minutes (range, 30-150), and 3.2 days (range, 2-7 days), respectively. There were 10 modified Clavien grade I and five grade II complications. No blood transfusions were necessary in this series. All patients were treated with double-J stents without a nephrostomy tube. Only one patient did not achieve stone-free status because of the strict stone impaction into the ureteral wall. This patient received auxiliary URSL after two months. Thereafter, the overall stone-clearance rate at three months was 100%.Conclusion: Our preliminary data showed that this modified method is safe and effective for treating large prox-imal ureteral stones. [ABSTRACT FROM AUTHOR]

Purpose: To share our multicenter experience using a safe and effective method for treating large proximal ure-teral calculus by simultaneous supine percutaneous nephrolithotomy (sPCNL) and retrograde ureterolithotripsy (URSL) in the Galdakao-modified supine Valdivia position., Materials and Methods: Between December 2014 and August 2017, all patients with large proximal ureteral stones (> 15 mm) who underwent simultaneous sPCNL and retrograde URSL at three medical centers were retro-spectively reported. The ureter stone was pushed back (retrograde) with the ureteroscope and was retrieved using forceps with a nephroscope through an Amplatz sheath. Surgical methods and outcomes were described to improve our experience and management of large proximal ureteral calculi., Results: A total of 31 patients underwent simultaneous sPCNL and retrograde URSL. The mean patient age, stone size, operating time, and postoperative hospital stay were 57 years (range, 32-74 years), 20.1 mm (range, 15.0-37.9 mm), 81 minutes (range, 30-150), and 3.2 days (range, 2-7 days), respectively. There were 10 modified Clavien grade I and five grade II complications. No blood transfusions were necessary in this series. All patients were treated with double-J stents without a nephrostomy tube. Only one patient did not achieve stone-free status because of the strict stone impaction into the ureteral wall. This patient received auxiliary URSL after two months. Thereafter, the overall stone-clearance rate at three months was 100%., Conclusion: Our preliminary data showed that this modified method is safe and effective for treating large prox-imal ureteral stones.