First Experience of Inserting a Metallic Mesh Stent (Uventa Stent) in Malignant Ureteral Obstruction in Iran

Mohammad Ali Ghaed, Maziar Daniali, Mohammad Ebrahimian



Malignant ureteral obstruction is usually caused by an extrinsic compression including intra-abdominal cancers. One of the treatment modalities decompressing the obstruction is applying stent to open the ureter. Metallic Stent is an effective instrument which we used for the first time in Iran in our patient who had a metastatic colon cancer
with a single kidney and we used a Novel, Double-Layered, Coated, Self-expandable Metallic Mesh Stent (Uventa Stent) to keep the ureter open. After six months of follow up with ureteroscopy, there was no obstruction any more.

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Kanou T, Fujiyama C, Nishimura K, Tokuda Y, Uozumi J, Masaki Z. Management of extrinsic malignant ureteral obstruction with

urinary diversion. Int J Urol. 2007;14:689-92.

Lingam K, Paterson P, Lingam M, Buckley J, Forrester A. Subcutaneous urinary diversion: an alternative to percutaneous nephrostomy. J Urol. 1994;152:70-2.

Liatsikos E, Kallidonis P, Kyriazis I, et al. Ureteral obstruction: is the full metallic double-pigtail stent the way to go? Eur Urol.


Chung KJ, Park BH, Park B, et al. Efficacy and safety of a novel, double-layered, coated, selfexpandable metallic mesh stent (Uventa™) in malignant ureteral obstructions. J Endourol.


Kim M, Hong B, Park HK. Long-Term Outcomes of Double-Layered Polytetrafluoroethylene Membrane-Covered Self-Expandable Segmental Metallic Stents (Uventa) in Patients with Chronic Ureteral Obstructions: Is It Really Safe? J Endourol.


Hendlin K, Korman E, Monga M. New metallic ureteral stents: improved tensile strength and resistance to extrinsic compression. J Endourol. 2012;26:271-4.

Kim KS, Choi S, Choi YS, et al. Comparison of efficacy and safety between a segmental thermo-expandable metal alloy spiral stent (Memokath 051) and a self-expandable covered metallic stent (UVENTA) in the management of ureteral obstructions. J Laparoendosc Adv Surg Tech A. 2014;24:550-5.

Wang HJ, Lee TY, Luo HL, et al. Application of resonance metallic stents for ureteral obstruction. BJU Int. 2011;108:428-32.


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