Long-term outcomes of two types of metal stent for chronic benign ureteral strictures
Abstract Background We aimed to compare the results of long-term use of two types of metal stent for chronic benign ureteral strictures. Methods Our study included 46 ureter units (UUs) that underwent metal stent placement from 2010 to 2017. We included benign ureteral strictures causes by variety r...
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| Format: | Article |
| Language: | English |
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BMC
2019-05-01
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| Series: | BMC Urology |
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| Online Access: | http://link.springer.com/article/10.1186/s12894-019-0465-5 |
| _version_ | 1818151382923870208 |
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| author | Joongwon Choi Kyung Jin Chung Seol Ho Choo Deok Hyun Han |
| author_facet | Joongwon Choi Kyung Jin Chung Seol Ho Choo Deok Hyun Han |
| author_sort | Joongwon Choi |
| collection | DOAJ |
| description | Abstract Background We aimed to compare the results of long-term use of two types of metal stent for chronic benign ureteral strictures. Methods Our study included 46 ureter units (UUs) that underwent metal stent placement from 2010 to 2017. We included benign ureteral strictures causes by variety reasons that could not be solved by other treatment and malignant obstructions were excluded. Covered mesh stent (Uventa™) and a thermo-expandable stent (Memokath 051™) were used. Primary success was defined as maintaining patency without procedures and overall success was defined as maintaining patency with additional procedures. Results We placed covered mesh stents in 25 UUs and thermo-expandable stents in 21 UUs. The mean follow-up duration of each stent was 41.4 ± 23.1 and 34.4 ± 16.5 months (p = 0.250). In the first year of stent insertion, primary success was achieved in 54.9 and 70.4% (p = 0.204). Overall success was achieved in 78.7 and 75.4% in same duration, respectively (p = 0.586). Longer stent placement had positive predictive value on both success rates (HR = 0.185, p = 0.047 and HR = 0.111, p = 0.018). Prior radiation therapy and non-pelvic ureter stricture both adversely affected the overall success rate (HR = 5.412, p = 0.048 and HR = 4.203, p = 0.030). Previous PCN status had negative predictive value for both success rates (HR = 4.014, p = 0.003 and HR = 3.064, p = 0.035). Conclusions The treatment outcomes of two types of metal stent were comparable, especially in the first year of stent insertion. |
| first_indexed | 2024-12-11T13:37:57Z |
| format | Article |
| id | doaj.art-7168ddbee4404eccb4b67be3792d2833 |
| institution | Directory Open Access Journal |
| issn | 1471-2490 |
| language | English |
| last_indexed | 2024-12-11T13:37:57Z |
| publishDate | 2019-05-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Urology |
| spelling | doaj.art-7168ddbee4404eccb4b67be3792d28332022-12-22T01:04:56ZengBMCBMC Urology1471-24902019-05-011911810.1186/s12894-019-0465-5Long-term outcomes of two types of metal stent for chronic benign ureteral stricturesJoongwon Choi0Kyung Jin Chung1Seol Ho Choo2Deok Hyun Han3Department of Urology, Samsung Medical Center, Sungkyunkwan University School of MedicineDepartment of Urology, Gachon University Gil Medical Center, Gachon University School of MedicineDepartment of Urology, Ajou University Medical Center, Ajou University School of MedicineDepartment of Urology, Samsung Medical Center, Sungkyunkwan University School of MedicineAbstract Background We aimed to compare the results of long-term use of two types of metal stent for chronic benign ureteral strictures. Methods Our study included 46 ureter units (UUs) that underwent metal stent placement from 2010 to 2017. We included benign ureteral strictures causes by variety reasons that could not be solved by other treatment and malignant obstructions were excluded. Covered mesh stent (Uventa™) and a thermo-expandable stent (Memokath 051™) were used. Primary success was defined as maintaining patency without procedures and overall success was defined as maintaining patency with additional procedures. Results We placed covered mesh stents in 25 UUs and thermo-expandable stents in 21 UUs. The mean follow-up duration of each stent was 41.4 ± 23.1 and 34.4 ± 16.5 months (p = 0.250). In the first year of stent insertion, primary success was achieved in 54.9 and 70.4% (p = 0.204). Overall success was achieved in 78.7 and 75.4% in same duration, respectively (p = 0.586). Longer stent placement had positive predictive value on both success rates (HR = 0.185, p = 0.047 and HR = 0.111, p = 0.018). Prior radiation therapy and non-pelvic ureter stricture both adversely affected the overall success rate (HR = 5.412, p = 0.048 and HR = 4.203, p = 0.030). Previous PCN status had negative predictive value for both success rates (HR = 4.014, p = 0.003 and HR = 3.064, p = 0.035). Conclusions The treatment outcomes of two types of metal stent were comparable, especially in the first year of stent insertion.http://link.springer.com/article/10.1186/s12894-019-0465-5Benign ureteral strictureMeshMetal stentSuccess rateThermo-expandable |
| spellingShingle | Joongwon Choi Kyung Jin Chung Seol Ho Choo Deok Hyun Han Long-term outcomes of two types of metal stent for chronic benign ureteral strictures BMC Urology Benign ureteral stricture Mesh Metal stent Success rate Thermo-expandable |
| title | Long-term outcomes of two types of metal stent for chronic benign ureteral strictures |
| title_full | Long-term outcomes of two types of metal stent for chronic benign ureteral strictures |
| title_fullStr | Long-term outcomes of two types of metal stent for chronic benign ureteral strictures |
| title_full_unstemmed | Long-term outcomes of two types of metal stent for chronic benign ureteral strictures |
| title_short | Long-term outcomes of two types of metal stent for chronic benign ureteral strictures |
| title_sort | long term outcomes of two types of metal stent for chronic benign ureteral strictures |
| topic | Benign ureteral stricture Mesh Metal stent Success rate Thermo-expandable |
| url | http://link.springer.com/article/10.1186/s12894-019-0465-5 |
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