Bladder Neck Contracture (BNC)
This atlas concerns stenosis of the bladder neck after benign prostate surgery, such as TURP or HoLEP. Post-prostatectomy VUAS involves a different anastomosis and remaining sphincter anatomy. Select treatment by lumen, length, prior procedures/radiation, bladder function, continence and patient goals.[1]
Decision framework
| Clinical situation | Main considerations |
|---|---|
| Nonobliterative post-BPO BNC | Transurethral resection or hot-knife incision are guideline-supported initial treatments; choose the technique for the anatomy and safe access |
| Recurrent but patent lumen | A further endoscopic procedure may be reasonable; repeated recurrence or unacceptable treatment burden warrants reconstruction discussion, without a fixed two-failure rule |
| Complete obliteration | Do not attempt endoluminal treatment; assess reconstructive access, tissue availability and drainage alternatives |
| Concurrent SUI | Establish stable patency and assess bladder/sphincter function before continence surgery; an AUS may be appropriate for substantial sphincteric leakage |
| Radiation, necrosis or fistula | Reassess tissue viability and bladder salvageability; reconstructive or diversion planning may require a specialist team |
| Devastated outlet | Consider chronic suprapubic drainage, selected closure with a dependable alternate route, or diversion according to bladder function and goals |
Avoid deep posterior-stenosis incisions at 6 and 12 o'clock. Mitomycin C should remain within a clinical trial under EAU guidance, and posterior urethral stents are discouraged. Drug-coated balloons in BNC are off-label; novel graft or mucosal-realignment procedures are not established first-line replacements.[1]
The database links to the detailed techniques. Reported outcomes identify selected cohorts and should not be compared as if they were trials in equivalent patients. Patency, dryness and freedom from additional procedures are different endpoints.
Treatment Database
| Technique | Tier | Evidence / reported outcome | Clinical use |
|---|---|---|---|
| Transurethral Incision of BNC (TUIBNC) | Endoscopic — First-Line | 101/123 after one; 116/123 after two (mixed cohort) | Nonobliterative BNC; see anatomy, depth and continence precautions. |
| Transurethral Bladder Neck Resection (TURBN) | Endoscopic — First-Line | Observational evidence; see detailed technique | Nonobliterative post-BPO BNC suitable for controlled loop resection. |
| Balloon Dilation for BNC | Endoscopic — Adjunct / Novel | Balloon-only and combined-incision outcomes differ | Selected nonobliterative disease or access before incision; posterior DCB use is off-label. |
| Transurethral Incision with Transverse Mucosal Realignment (TUITMR) | Endoscopic — Adjunct / Novel | 17/19 initial; 19/19 after repeat, median 6 mo | Evolving endoscopic mucosal-realignment option; mixed BNC/VUAS index cohort. |
| Y-V Plasty (Robotic / Open) | Reconstruction — Robotic | Selected observational cohorts | Refractory stenosis with viable bladder tissue that can reach the opened outlet without tension. |
| Robotic Subtrigonal BMG Inlay | Reconstruction — Robotic | Single post-BPH BNC case report | Specialist graft augmentation; distinct from perineal dorsal onlay. |
| 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. |
| Transvesical RARP for Recalcitrant BNC | Reconstruction — Robotic | 8 selected post-HoLEP cases; minimum 6 mo | Exceptional salvage with remaining prostate tissue; not routine BNC treatment. |
| T-Plasty | Reconstruction — Open | 27/27 evaluable of 30, median 45 mo | Selected recurrent post-BPO BNC; one center with overlapping reports. |
| Tanagho Flap | Reconstruction — Open | Historical heterogeneous series | Bladder-tube reconstruction for selected outlet/urethral loss; not routine post-BPO BNC. |
| Salvage Prostatectomy (Reconstructive) | Reconstruction — Open | Highly selected salvage cohorts | An unsalvageable remaining prostate in complex outlet disease; abscess alone does not mandate prostatectomy. |
| Bladder Neck Closure | Continence-Creating Outlet | Closure, continence and revision are separate outcomes | Selected devastated outlet with permanent SPT or another dependable drainage route. |
| Permanent Suprapubic Catheter | Salvage / Diversion | Drainage option | Temporary or long-term drainage according to reconstruction suitability and patient goals. |
| Continent Catheterizable Channel (Mitrofanoff) | Salvage / Diversion | Catheterizable access; long-term revision risk | Selected patients with safe storage and reliable catheterization; outlet closure/augmentation only when indicated. |
| Urinary Diversion ± Cystectomy | Salvage / Diversion | Individual reconstruction-specific outcomes | Unsuitable bladder/outlet or unacceptable further reconstructive burden; choose 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.