Vesicourethral Anastomotic Stenosis (VUAS)
VUAS is stenosis of the bladder-to-urethra anastomosis after radical prostatectomy, with or without radiation. Assess the lumen, length, sphincter relationship, tissue quality, bladder function, prior treatment and baseline continence before choosing treatment. Incidence and outcomes vary with the population; robotic access, laser energy or nontransecting grafting is not universally superior.[1]
A 2024 systematic review of 40 endoscopic studies and 1,452 patients estimated success at 72.8% (95% CI 64.4–79.9%), or 62.9% after adjustment for publication bias. Heterogeneous techniques and follow-up limit direct comparisons. These estimates do not mean that 90% need retreatment within two years.[2]
Decision framework
| Clinical situation | Main considerations |
|---|---|
| Nonobliterative VUAS | Visually controlled dilation or DVIU; no universally preferred incision energy |
| Recurrent nonobliterative stenosis | Selected repeat endoscopic treatment or specialist reconstruction discussion according to burden and goals; no mandatory two-failure threshold |
| Complete obliteration | No endoluminal treatment; assess reanastomosis, tissue augmentation or drainage/diversion according to the defect |
| Prior radiation, fistula or necrosis | Evaluate tissue viability, bladder function and suitability for repair; no single graft/flap is a universal preferred solution |
| Significant SUI | Establish stable patency and assess storage first; discuss an AUS when appropriate, including risks after radiation or urethral reconstruction |
| Devastated outlet or bladder | Chronic suprapubic drainage, selected closure with another reliable outlet, or diversion; the prostate has already been removed |
Avoid deep incisions at 6 and 12 o'clock. Mitomycin C should not be used for posterior stenosis outside a clinical trial under EAU guidance, and posterior urethral stents are discouraged. Posterior DCB use is off-label; TUITMR and endoscopic grafting remain supported by limited comparative evidence.[1]
Choosing reconstruction
Consider length, caliber, sphincter involvement, prior operations/radiation, viable tissue and bladder mobility together. A single 10 Fr cutoff does not constitute a validated rule that mandates a flap, excision or pull-through. Transperineal reanastomosis, retropubic, transvesical and combined access address different defects; their case-series percentages cannot be used as causal rankings of patency or continence.[1]
The database summarizes scoped evidence and links to the operative pages. Primary patency, additional-treatment success, urethral voiding and patient-reported continence remain separate outcomes.
Treatment Database
| Technique | Tier | Evidence / reported outcome | Clinical use |
|---|---|---|---|
| Transurethral Incision (Holmium Laser / Cold Knife / DVIU) | Endoscopic — First-Line | Heterogeneous endoscopic evidence | Nonobliterative VUAS; controlled access and posterior incision safety are essential. |
| Balloon Dilation | Endoscopic — First-Line | 16/27 in historical balloon-only cohort | Selected nonobliterative VUAS; no proven lowest-incontinence advantage. |
| Transurethral Incision with Transverse Mucosal Realignment (TUITMR) | Endoscopic — Adjunct / Novel | 17/19 initial; 19/19 after repeat, median 6 mo | Evolving mucosal-realignment technique; index cohort mixed BNC/VUAS. |
| Robotic Y-V Plasty | Reconstruction — Robotic | Selected observational cohorts | Refractory VUAS with appropriate tissue for advancement; substantial SUI risk requires counseling. |
| Robotic Transvesical BN Reconstruction (RTV-BNR) | Reconstruction — Robotic | 10/11 at median 22 mo | Selected short VUAS under 2 cm; small retrospective series does not establish superior continence. |
| Robotic Bladder Flap Posterior Urethroplasty | Reconstruction — Robotic | 7/9 without recurrence, mean 21.1 wk | Selected mixed BNC/VUAS defects requiring a new flap-based anastomosis. |
| Primary Re-Anastomosis (Open / Robotic) | Reconstruction — Open | Varies by cohort, access and endpoint | Refractory or obliterative VUAS with viable tissue for tension-free reconnection. |
| Tanagho Flap | Reconstruction — Open | Historical/selected salvage reports | Bladder-tube reconstruction; distinct from a modern Y-V or short bladder-flap repair. |
| Combined Abdominoperineal Approach (Transperineal Advancement / Pull-Through) | Reconstruction — Open | Small selected combined-repair cohorts | Complex defects requiring both routes for access or tension-free tissue reach; PFUI outcomes are not VUAS outcomes. |
| Dorsal Onlay BMG (Sterling) — VUAS | Reconstruction — Graft-Based | 7 recurrences in 45 mixed VUAS/BMS patients | Selected nonobliterative post-RP/radiation disease; reported low new SUI does not guarantee sphincter preservation. |
| Endourethroplasty | Reconstruction — Graft-Based | Small posterior cohorts and technical cases | Selected endoscopic grafting; not routine treatment of complete obliteration. TUITMR is a separate nongraft technique. |
| Permanent Suprapubic Catheter | Salvage / Diversion | Drainage option | Temporary or long-term drainage according to function, reconstructive suitability and patient goals. |
| Continent Catheterizable Channel (Mitrofanoff) | Salvage / Diversion | Catheterizable access; long-term revision risk | Safe reservoir and reliable catheterization; assess need for closure or augmentation separately. |
| Urinary Diversion ± Cystectomy | Salvage / Diversion | Individual reconstruction-specific outcomes | Unsuitable bladder/outlet or unacceptable further reconstructive burden; select with the patient. |
References
1. European Association of Urology. EAU Guidelines on Urethral Strictures. 2026. Disease management in males, sections 6.3.5–6.3.6. Guideline.
2. Delchet O, et al. Post-prostatectomy anastomotic stenosis: systematic review and meta-analysis of endoscopic treatment. BJU Int. 2024. doi:10.1111/bju.16141.