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Efficacy and Incontinence Rates After Urethroplasty for Radiation-induced Urethral Stenosis: A Systematic Review and Meta-analysis
To estimate the efficacy of urethroplasty and rates of de novo stress urinary incontinence (SUI) in the specific setting of radiation-induced urethral stenosis. A systematic search of databases (PubMed and EMBASE) was performed between 1980-2019 (CRD42020144845). Inclusion criteria were: (1) prior p...
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Published in: | Urology (Ridgewood, N.J.) N.J.), 2021-06, Vol.152, p.109-116 |
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Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
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Online Access: | Get full text |
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Summary: | To estimate the efficacy of urethroplasty and rates of de novo stress urinary incontinence (SUI) in the specific setting of radiation-induced urethral stenosis.
A systematic search of databases (PubMed and EMBASE) was performed between 1980-2019 (CRD42020144845). Inclusion criteria were: (1) prior pelvic radiotherapy; (2) surgical urethroplasty; (3) rates of successful treatment and/or SUI development and (4) total case number provided. The pooled summary of stenosis resolution rate and SUI were calculated using the random-effects model weighted by the inverse variance. Accessory analyses were performed by reconstructive technique and type of RT.
Ninety-six studies were identified, of which 8 retrospective studies met inclusion criteria, comprising 256 patients. The proportion of cases treated with external beam RT (EBRT), brachytherapy (BT), or combination (EBRT+BT) were 52%, 33%, and 15%, respectively, of studies that specified modality. Most strictures involved the bulbomembranous region (n = 212; 83%). Sixty-one percent of cases (n = 157) entailed primary anastomosis, while the remainder underwent augmentation reconstruction (graft or flap). The mean follow-up time after urethroplasty varied from 10 to 50.5 months. The pooled stenosis resolution rate was 80% (95% CI: 74%-86%). There were no significant associations between stenosis resolution rate and reconstructive technique (rho=0.20, P = .74) or RT modality (rho=-0.31, P = .53). Fifty-three cases developed subsequent SUI, with a pooled complication rate of 19% (95% CI: 10%-31%).
Urethroplasty after radiation-induced urethral stenosis is effective for 80% of cases, independent of prior RT modality or urethroplasty technique; however, 1 out of every 5 patients develops SUI post-procedure. |
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ISSN: | 0090-4295 1527-9995 |
DOI: | 10.1016/j.urology.2021.02.014 |