[Papillary transitional cell carcinoma of the bladder after 1 year use of a double-J ureteral catheter].

A 37-year old man with a five-year history of nephrolithiasis was catheterized with a double-J ureteral stent (Angiomed) in the left ureter before extra corporeal shock wave lithotripsy. After eight lithotripsy treatments over the course of one year, the double-J stent was removed. Papillary tumor was discovered around the left ureter ostium. Histology showed papillary transitional cell carcinoma grade 2 without invasive growth. No neoplasm has previously been observed after using double pigtail stents for longtime-stenting. One should keep this case in mind, when controlling ureteral stents that are left in place for longer periods.