期刊
WORLD JOURNAL OF UROLOGY
卷 39, 期 9, 页码 3197-3205出版社
SPRINGER
DOI: 10.1007/s00345-020-03544-x
关键词
Ureteral obstruction; Stent; Metallic stents; Tumor stents; Malignancy; Benign stricture and malignant stricture
Metallic stents are a suitable option for both MUO and BUO, showing financial benefits in the long-term despite higher prices. The Detour bypass stent appears to be an effective alternative for patients with complete ureteral obstruction or who are unfit for surgery. Further prospective randomized studies are needed to compare the effectiveness of tumor stents with metallic stents.
Objective To define which long-term stent would work best in malignant ureteral obstruction (MUO) and benign ureteral obstruction (BUO), focusing on their mechanisms of action, price and insertion approach. Methods A systematic review was developed using the MEDLINE and Scopus databases and in accordance with the PRISMA checklist. There were no language restrictions for the search. Studies describing the use of metallic ureteric stents for MUO and for BUO in humans were included. Results We analyzed five types of metallic stents (35 papers) and also the experience with the tumor and extra-anatomical stents. The Resonance, Memokath and Allium ureteral stents were found to be useful in BUO and MUO. The Uventa stent performed well in chronic ureteral obstruction. The Detour bypass stent was a recommended option in those patients who had complete obstruction of the ureter and were unfit for reconstructive surgery. There was no difference with regard to the insertion technique and both antegrade and retrograde approaches were equally successful. Although tumor stents showed a good performance, there were very few published studies on it. Conclusion Metallic stents are a suitable option for MUO and BUO. When compared to standard double J stents, although they are relatively high priced, they show a financial benefit in the long-term. The Detour bypass stent seems to be an effective alternative for complete ureteral obstruction or patients unfit for surgery. Further prospective randomized studies should be done on the effectiveness of tumor stents versus metallic stents.
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