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  • Title: Modified Laparoscopic and Robotic Flap Pyeloplasty for Recurrent Ureteropelvic Junction Obstruction with a Long Proximal Ureteral Stricture: The "Wishbone" Anastomosis and the "Ureteral Plate" Technique.
    Author: Cheng S, Li X, Yang K, Xiong S, Li Z, Zhu H, Zhang P, Li X, Guan H, Li Z, Hao H, Zhang L, Li X, Zhou L.
    Journal: Urol Int; 2021; 105(7-8):642-649. PubMed ID: 33567431.
    Abstract:
    OBJECTIVES: The aim of the study was to present our modified flap pyeloplasty techniques for recurrent ureteropelvic junction obstruction (UPJO) with a long proximal ureteral stricture and compare outcomes of laparoscopic and robotic procedures. MATERIALS AND METHODS: Between March 2018 and January 2020, 21 patients underwent modified laparoscopic or robotic flap pyeloplasty for recurrent UPJO with a long proximal ureteral stricture. Our surgical modifications included the "wishbone" anastomosis and "ureteral plate" technique. Demographic, perioperative, and follow-up data were recorded and compared retrospectively between the groups. Success was defined as subjective pain alleviation and hydronephrosis improvement. RESULTS: Thirteen modified laparoscopic flap pyeloplasty (mLFP) and 8 modified robotic flap pyeloplasty (mRFP) were performed successfully without conversion. mRFP tended to have shorter overall operative time (142.4 vs. 179.1 min, p = 0.122) and anastomosis time (43.1 vs. 61.0 min, p = 0.093) than mLFP. No difference was found in estimated blood loss (p = 0.723) and pararenal draining time (p = 0.175) between the groups. The mean postoperative hospital stay of mRFP was significantly shorter than that of mLFP (5.0 vs. 8.2 days, p = 0.015). No major complications occurred. During the mean follow-up of 17.9 months, the overall success rate was 90.5%, and there was no significant difference between 2 groups. CONCLUSIONS: The modified flap pyeloplasty could be considered a practical and effective treatment option with a high success rate for recurrent UPJO with a long proximal ureteral stricture, and the robotic procedures showed advantages of higher efficiency and faster recovery.
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