Abstract:Abstract: Objective?To investigate the safety and efficacy of minimally invasive percutaneous antegrade and transurethral retrograde ureteroscopy in treatment of transplanted kidney ureteral stricture.?Methods?The clinical data of 43 patients with ureteral stricture from May 2007 to December 2017 were retrospectively analyzed. Minimally invasive percutaneous antegrade and ureteral retrograde ureter were used. Endoscopic treatment such as mirror technique, electrosurgical incision or balloon dilatation in the ureteral stricture or atresia of the transplanted kidney, postoperative placement of NiTi shape memory alloy stent or ureteral stent tube, regular review and evaluation of renal function variety.?Results?Of the 43 patients with renal ureteral stricture, 20 underwent transurethral retrograde ureteroscopy, 23 underwent minimally invasive percutaneous antegrade combine with transurethral retrograde ureteroscopy. The operation time was average (53.3?±?10.5) min. There were 17 patients underwent 2 to 3 times intraluminal balloon dilatation, 13 cases of NiTi shape memory alloy stent, 5 cases of new type NiTi memory stent (Allium Stents). After 3 to 36 months of follow-up, The Scr was average (143.4?±?28.0)?μmol/L.?Conclusion?Minimally invasive percutaneous antegrade and transurethral retrograde ureteroscopy for the treatment of ureteral stricture is safe, effective and reliable, especially for stenosis and obstruction repeatedly.