Abstract
In the past two decades, the widespread use of cross-trigonal ureteral reimplants for the treatment of children with vesicoureteral reflux has resulted in a large population of patients with transversely lying ureters. As this population gets older they will consequently be entering an age group at higher risk for stone and urothelial cancer formation, with the potential for diagnostic and/or therapeutic ureteroscopy. The anatomic orientation of the ureters resulting from a cross-trigonal reimplantation may create difficulty or even inability to perform transurethral ureteroscopy. This case presents the technique of percutaneous transvesical ureteroscopy for stone extraction in a seventeen-year-old male with a lower ureteral stone following cross-trigonal ureteral reimplantation. The described technique may serve as an addition to the current endoscopic methods.
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