title: Self-expanding metallic ureteral stents for treatment of ureteral stenosis after kidney transplantation.
abstract: The incidence of post-renal transplantation ureteral stenosis ranges from 2%-12%. Because the role of self-expanding ureteral metallic stents for its treatment has been scarcely reported, the aim of this study was to evaluate the efficacy of Nitinol stents. Eleven ureteral stenoses in patients with chronic graft dysfunction (8 cases) or high surgical risk (3 cases) were treated by antegrade percutaneous implantation of Nitinol stents through a nephrostomy tract. The mean follow-up period was 48 +/- 7 months (range, 3-85 months). The patency rate at the moment of return to dialysis, death, or last check-up was 73% (8/11). Three patients (27%) developed stent occlusion. Two patients were treated using a trans-stent double-J catheter and 1 patient using stent removal and pyeloureterostomy using the native ureter. The mean percentage decrease in serum creatinine (Cr) level after stent implantation was 41% (range, 14%-63%). Nitinol ureteral stent implantation is an effective alternative for the treatment of ureteral stenosis in patients with chronic graft dysfunction or high surgical risk.
authors.affiliation: Department of Urology, Hospital Ramon y Cajal, Universidad de Alcalá, Madrid, Spain. burgoss2000@yahoo.es
authors.forename: F J
authors.initials: FJ
authors.lastname: Burgos
authors.forename: J
authors.initials: J
authors.lastname: Pascual
authors.forename: R
authors.initials: R
authors.lastname: Marcen
authors.forename: R
authors.initials: R
authors.lastname: García-Navas
authors.forename: I Gómez
authors.initials: IG
authors.lastname: García
authors.forename: C
authors.initials: C
authors.lastname: Alarcón
authors.forename: V
authors.initials: V
authors.lastname: Gómez
authors.forename: D
authors.initials: D
authors.lastname: García-Ortells
authors.forename: G
authors.initials: G
authors.lastname: Tabernero
authors.forename: J
authors.initials: J
authors.lastname: Ortuño
mesh_terms: D003404:Creatinine / Q000097:blood; D004867:Equipment Design; D005500:Follow-Up Studies; D006801:Humans; D016030:Kidney Transplantation / Q000009:adverse effects*; D011183:Postoperative Complications / Q000601:surgery*; D015607:Stents; D013997:Time Factors; D014515:Ureteral Diseases / Q000628:therapy*
chemical_list: D003404:Creatinine