Male Fistula Repair
Male genitourinary fistula repair is dominated by iatrogenic disease — most cases arise as complications of prostate cancer treatment (radical prostatectomy, radiation, energy ablation) or inflammatory bowel disease (diverticulitis, Crohn's). The recurring decisions are route (transperineal vs. transabdominal vs. transanal vs. combined), timing relative to fecal / urinary diversion, interposition flap need (gracilis vs. rectus abdominis vs. omentum), and whether extirpative surgery with permanent diversion is the better primary endpoint.
Decision Framework
Male fistulas are overwhelmingly iatrogenic — most arise as complications of prostate cancer treatment (radical prostatectomy, radiation, energy ablation) or inflammatory bowel disease (diverticulitis, Crohn's). Pooled prevalence of radiation-induced fistula after prostate-cancer radiotherapy is ~0.2% but the consequences are devastating (Sadighian 2023). The dominant types reflect male pelvic anatomy: rectourethral (RUF), enterovesical / colovesical (EVF / CVF), urosymphyseal / puboprostatic (USF / PPF), urethrocutaneous (UCF), and radiation-induced complex anterior urinary fistula. The single most consequential variable is prior radiation — non-irradiated fistulas approach near-100% success with appropriate technique, while post-radiation cases require complex multimodality care, frequently end in extirpative surgery, and have substantially higher rates of permanent diversion and incontinence.
Identify the Fistula Type
| Presentation | Most Likely Fistula | Key Diagnostic Test |
|---|---|---|
| Pneumaturia + fecaluria + recurrent UTI after prostate cancer treatment | RUF (rectourethral) | Cystourethroscopy + proctoscopy; VCUG; MRI |
| Pneumaturia + fecaluria + recurrent UTI in a patient with diverticulitis or Crohn's | EVF / CVF (enterovesical / colovesical) | CT abdomen-pelvis; cystoscopy; colonoscopy; poppy-seed test (94.6% sensitivity) |
| Debilitating pubic / groin pain after pelvic RT + endoscopic BNC treatment | USF / PPF (urosymphyseal / puboprostatic) | MRI (critical); CT (gas in symphysis); bone cultures (80% positive) |
| Urinary leakage through penile / scrotal / perineal skin opening | UCF (urethrocutaneous) | Physical exam; retrograde urethrogram; cystourethroscopy |
| Urine drainage to the thigh or pubic skin after prostate-cancer RT | Radiation-induced anterior urinary fistula | CT; MRI; fistulogram |
Rectourethral Fistula (RUF) Decision Algorithm
| Clinical Scenario | Recommended Intervention | Key Considerations |
|---|---|---|
| Small RUF, no fecaluria, post-RP | Conservative: urethral catheter ± SPC drainage | May heal spontaneously; close monitoring |
| RUF with fecaluria, post-RP | Fecal diversion (colostomy) + urinary catheter → observe 3–6 mo | 33% heal with diversion alone; if persistent → surgical repair |
| Persistent non-irradiated RUF | Transperineal repair + gracilis flap (Lahey approach) | 95–100% success (Vanni 2010, Sbizzera 2022); colostomy may not be mandatory; BMG if concurrent stricture |
| Small RUF (≤ 1.5 cm), non-irradiated, no fecaluria | Transanal minimally invasive repair (MITAR / TAMIS) | 100% success in selected patients (Nicita 2017); no colostomy needed; ~58 min OR, 1.5-day LOS |
| Non-irradiated post-RARP RUF | York-Mason transsphincteric repair ± dartos flap | 100% success as first surgical intervention (van der Graaf 2025; Dafnis 2024); direct visualization |
| RUF with concurrent posterior urethral stenosis | Transperineal RUF repair + simultaneous posterior urethroplasty (anastomotic or BMG) + gracilis flap | 87% success (Khouri 2024 Cleveland Clinic series, n = 23); urethral stenosis should NOT preclude restorative surgery |
| Post-radiation / energy-ablation RUF | Transperineal repair + gracilis flap; consider abdominoperineal approach for complex cases | 84–87% success; 31% need permanent fecal diversion; 35% post-op incontinence (Harris 2017 multi-institutional, n = 201) |
| Complex post-radiation RUF with cavitation, failed repair, non-functioning bladder | Extirpative surgery (cystoprostatectomy) + permanent dual urinary diversion | 50% of post-radiation patients ultimately require this (Martins 2021); legitimate primary endpoint, not a failure |
Enterovesical / Colovesical Fistula (EVF / CVF) Decision Algorithm
| Clinical Scenario | Recommended Intervention | Key Considerations |
|---|---|---|
| CVF from diverticulitis, no abscess / obstruction | One-stage sigmoidectomy + primary anastomosis; Foley catheter alone for the bladder | Procedure of choice; bladder repair usually unnecessary (Ferguson 2008 — 68% Foley-only with equivalent outcomes); Froiio 2022 meta — Clavien ≥ 3 7.4%, mortality 1.5%, recurrence 0.5% |
| CVF from diverticulitis, fit for MIS | Robotic or laparoscopic sigmoidectomy + primary anastomosis | Sassun 2025 robotic series (n = 89): 1% conversion / 1% recurrence at 16.5 mo |
| CVF with abscess or obstruction | Staged procedure: diversion → resection → anastomosis | Multi-stage for complicated presentations |
| EVF in Crohn's disease | Resection of affected bowel + primary bladder closure (2 layers) ± omental patch | 90% require surgery (Solem 2002, Gruner 2002); 96% durable remission; cystectomy not needed |
| CVF from colorectal cancer | Oncologic resection with en bloc fistula excision; may require partial cystectomy | Must exclude malignancy preop; staged if metastatic |
| Patient unfit for surgery | Medical management with antibiotics | Preferable to diverting colostomy alone (which does not resolve fistula) |
Urosymphyseal / Puboprostatic Fistula (USF / PPF) Decision Algorithm
USF / PPF is a distinct entity arising almost exclusively from pelvic radiotherapy combined with subsequent endoscopic BNC manipulation. Conservative management does not resolve symptoms and is not recommended as definitive treatment (Andrews 2021).
| Clinical Scenario | Recommended Intervention | Key Considerations |
|---|---|---|
| USF with limited bone involvement | Pubic symphysis debridement + fistula closure + rectus abdominis interposition flap | 100% closure at 27 mo (Kaufman 2016 organ-sparing series, n = 4); avoids cystectomy |
| USF with extensive osteomyelitis | Pubectomy + urinary reconstruction (continent or incontinent diversion) | Pain resolution 96%; ECOG PS 3 → 0 (Andrews 2021); major complications 32% |
| USF with non-functioning bladder or extensive tissue destruction | Cystectomy + ileal conduit diversion | Required in 53–83% of patients (Bugeja 2016, Walach 2024); definitive |
Urethrocutaneous Fistula (UCF) Decision Algorithm
In adults, UCF is most commonly a sequela of failed childhood hypospadias surgery (Aldamanhori 2018 — fistula in 12.5–19% of adult hypospadias repairs); other causes include post-urethroplasty complications and gender-affirming genital surgery (metoidioplasty / phalloplasty).
| Clinical Scenario | Recommended Intervention | Key Considerations |
|---|---|---|
| Simple UCF (single, small) | Simple closure + de-epithelialized skin advancement flap | 93–96% success (Santangelo 2003); outpatient; catheter may not be needed (Sen 2007) |
| Recurrent UCF after failed conventional repair | PATIO technique (Preserve And Turn Inside Out) or rectus fascia graft interposition | PATIO 100% in 5 repairs incl. recurrent (Malone 2009); fascia graft 0% recurrence in 3 metoidioplasty cases (Johnsen 2018) |
| UCF from failed hypospadias repair | Two-stage urethroplasty with buccal mucosa graft | 76% overall success including redo (Myers 2012; Morrison 2018); BMG superior to skin grafts |
| Penoscrotal UCF | De-epithelialized scrotal flap reinforcement | 0% recurrence (Lee 1990, n = 8); can be done without diversion |
| Multilayer closure for tension issues | Multilayer direct closure with longitudinal relaxing incision | 100% in 46 fistulas / 34 patients (Chen 2020) |
Radiation-Induced Complex Anterior Urinary Fistula
Distinct entity — fistulation from the urinary tract anteriorly to pubic symphysis (61%), thigh (38%), or perineal skin after pelvic radiotherapy for prostate cancer. TURNS multicenter (n = 31, Osterberg 2017): 19/31 underwent cystectomy, 12/31 underwent fistula repair (most with rectus abdominis interposition); 84% pain resolution at 6 mo, only 1 recurrence (managed with subsequent cystectomy).
Universal Principles & Cross-Cutting Decisions
For universal surgical principles (tension-free / watertight closure, tissue-interposition selection, postoperative drainage, repair timing, the "first operation is the best chance" rule), and for cross-cutting topics like preoperative urinary + fecal diversion, post-repair incontinence (37–61% after RUF), and AUS planning, see the Principles of Fistula Repair article. For male SUI / AUS pathways after fistula closure, see the Male SUI page.
Treatment Database
33 of 33 techniques
| Technique | Fistula Type | Notes |
|---|---|---|
| Conservative — Urethral / SP Catheter (RUF, no fecaluria) | Rectourethral Fistula | For small RUF without fecaluria after radical prostatectomy. Prolonged urethral catheter ± suprapubic catheter may permit spontaneous closure. Thomas 2010: all 3 patients without fecaluria healed conservatively. |
| Fecal Diversion + Catheter (RUF with fecaluria) | Rectourethral Fistula | Mandatory diverting colostomy + urinary catheter for infection control when fecaluria present. **33–47% spontaneous closure** after diversion (Thomas 2010, Keller 2015). Remaining 43% require definitive surgical intervention. |
| Transperineal Gracilis Interposition (Lahey) | Rectourethral Fistula | **Workhorse for RUF.** Vertical perineal incision; fistula dissection; separate rectal + urethral closures; [gracilis flap](/docs/foundations/surgical-principles/flaps/gracilis) interposition. Vanni 2010 / Sbizzera 2022: **95–100% non-irradiated, 84% irradiated**. Allows concurrent urethroplasty. |
| York-Mason Posterior Sagittal Transrectal Repair | Rectourethral Fistula | Prone posterior sagittal transrectal approach for **non-irradiated** RUF. Van der Graaf 2025 post-RARP series; Dafnis 2024 (n = 5 + dartos flap, **100% at 70 mo**) — direct visualization, no thigh harvest required. |
| Transanal Endoscopic Surgery (TEO / TEM) | Rectourethral Fistula | Transanal endoscopic approach ± biologic mesh for RUF. **Poor results — 25% (2/8 patients; Serra-Aracil 2018)**; biologic mesh associated with 100% recurrence. **Not recommended as primary approach.** |
| Endorectal Advancement Flap | Rectourethral Fistula | Transanal mobilization of a full-thickness rectal flap to cover the rectal side of a small (<1.5 cm), non-irradiated RUF after fistula tract excision. Lower-morbidity option for favorable anatomy; reported success rates are highly variable (25–100%) and depend on patient selection and absence of radiation. |
| Transanal Minimally Invasive Repair (MITAR / TAMIS) | Rectourethral Fistula | MITAR and TAMIS platforms for low, non-irradiated RUFs with favorable access. Lower morbidity alternative to York-Mason in selected cases. |
| Robotic Transabdominal RUF Repair | Rectourethral Fistula | Robotic transabdominal approach for high RUF or concomitant bladder or ureteric involvement. Omental interposition where reachable. |
| Concurrent Urethroplasty with RUF Repair | Rectourethral Fistula | Urethroplasty performed at the same setting as fistula closure when a coexisting stricture would otherwise cause urine leakage across the repair (Khouri data). |
| Turnbull–Cutait Pull-Through Coloanal Anastomosis | Rectourethral Fistula | Two-stage proctectomy with delayed coloanal pull-through for severe rectal injury, radiation-damaged rectum, or failed prior RUF repair. Eliminates the diseased rectal segment when local repair is not feasible; transanal minimally invasive proctectomy with staged Turnbull–Cutait reconstruction has been reported for iatrogenic RUF. |
| Permanent Dual Diversion (Catastrophic RUF) | Rectourethral Fistula | Urinary and fecal diversion as a definitive endpoint for irradiated, failed, multi-operated RUFs — Martins series supports this as legitimate primary option, not a failure. |
| Rectovesical Fistula Repair | Rectovesical Fistula | Transabdominal approach for post-prostatectomy rectovesical fistulas above the anastomosis, with omental interposition. |
| One-Stage Sigmoidectomy + Primary Anastomosis (CVF) | Enterovesical / Colovesical Fistula | **Procedure of choice** for benign EVF / CVF (diverticulitis, Crohn's) without abscess or obstruction. Bladder defect typically heals with **Foley catheter alone** — formal repair usually unnecessary (Ferguson 2008: 68% Foley-only with equivalent outcomes). Froiio 2022 meta: Clavien ≥ 3 7.4%, mortality 1.5%, **recurrence 0.5%**. |
| Robotic / Laparoscopic Sigmoidectomy (CVF) | Enterovesical / Colovesical Fistula | Minimally-invasive sigmoidectomy with primary anastomosis — increasingly preferred. Sassun 2025 robotic series (n = 89): **1% conversion / 1% recurrence at 16.5 mo**. Volkert 2025 propensity-matched: equivalent complications, shorter LOS vs open. |
| Staged Resection (Complicated CVF) | Enterovesical / Colovesical Fistula | Diversion → resection → anastomosis for CVF complicated by abscess, obstruction, or advanced malignancy. Multi-stage approach. |
| Crohn's-Related Enterovesical Fistula | Enterovesical / Colovesical Fistula | Resection of affected bowel + primary 2-layer bladder closure ± omental patch. **90% require surgery** (Solem 2002, Gruner 2002 — n = 70); 96% durable remission. Rectum is the origin in 8% of Crohn's urinary fistulas (Solem). Cystectomy / nephrectomy not needed. |
| CVF Medical Management (Antibiotics) | Enterovesical / Colovesical Fistula | For patients unfit for surgery. Preferable to diverting colostomy alone (which does not resolve the fistula). Moss 1990: all 8 patients managed medically were free of fistula complications until death from other causes. |
| Pubic Symphysis Debridement + Rectus Abdominis Flap (Organ-Sparing USF) | Urosymphyseal / Puboprostatic Fistula | Pubic-symphysis debridement + fistula closure + [rectus abdominis interposition flap](/docs/foundations/surgical-principles/flaps/vram) — organ-sparing reconstruction for USF / PPF with limited bone involvement. Kaufman 2016: **100% closure at 27 mo** (n = 4); avoids cystectomy. |
| Pubectomy + Urinary Reconstruction (Extensive Osteomyelitis) | Urosymphyseal / Puboprostatic Fistula | Fistula decompression + bone resection + urinary reconstruction (continent or incontinent diversion). Andrews 2021: **pain resolution 96%**, ECOG PS 3 → 0; major complications 32%. Bone cultures essential — 80% positive with 95.5% urine-vs-bone discordance. |
| Cystectomy + Ileal Conduit (USF Definitive) | Urosymphyseal / Puboprostatic Fistula | Required in **53–83%** of USF / PPF patients (Bugeja 2016, Walach 2024). Definitive for non-functioning bladder or extensive tissue destruction. Resolves pain and infection but mandates lifelong stoma care. |
| TURNS Radiation Anterior Urinary Fistula Workflow | Radiation Anterior Urinary Fistula | Distinct entity — fistulation from urinary tract anteriorly to **pubic symphysis (61%) / thigh (38%) / perineal skin** after pelvic RT for prostate cancer. Osterberg 2017 TURNS multicenter (n = 31): 19/31 cystectomy, 12/31 fistula repair (most with rectus abdominis interposition); **84% pain resolution at 6 mo**, 1 recurrence. |
| Simple Closure + De-Epithelialized Skin Advancement Flap | Urethrocutaneous Fistula | Standard outpatient repair for simple distal UCF. Two-layer closure with de-epithelialized flap for coverage — **93–96% success** (Santangelo 2003); often performed under local anesthesia; catheterization may not be necessary (Sen 2007). |
| Two-Layer Dartos / TVF Closure (Primary Distal) | Urethrocutaneous Fistula | Double dartos or TVF closure for primary distal UCF after hypospadias repair. Fahmy algorithm favors two-layer repair for distal primary UCF. |
| Tunica Vaginalis / Scrotal Flap (Proximal / Redo) | Urethrocutaneous Fistula | Tunica vaginalis or scrotal flap interposition for proximal, redo, or post-fistula-repair UCFs. Choudhury 2023 meta — waterproofing with TVF / scrotal at 94–95% vs 73% simple closure. |
| PATIO Repair (Preserve And Turn Inside Out) | Urethrocutaneous Fistula | Fistula tract is dissected out but **preserved and inverted into the urethral lumen**, creating a flap valve. **100% success in 5 repairs** including recurrent fistulas after failed conventional closure (Malone 2009). Day-case without catheterization. |
| Multilayer Closure with Longitudinal Relaxing Incision | Urethrocutaneous Fistula | Reduces skin-tension at the closure site to improve healing. Chen 2020: **100% in 46 fistulas / 34 patients**. |
| Rectus Fascia Graft Interposition (Metoidioplasty UCF) | Urethrocutaneous Fistula | Autologous rectus fascia graft placed between urethral and skin closures to separate suture lines after metoidioplasty. Johnsen 2018: **0% recurrence at 7 mo** in 3 patients with mean 3 prior failed repairs. |
| De-Epithelialized Scrotal Flap (Penoscrotal UCF) | Urethrocutaneous Fistula | Particularly useful for penoscrotal fistulas. Lee 1990: **0% recurrence in 8 patients**; can be performed without urinary diversion. |
| Two-Stage BMG Urethroplasty (Failed Hypospadias UCF) | Urethrocutaneous Fistula | **Procedure of choice for adults with complex UCF after failed childhood hypospadias repair.** Myers 2012 / Morrison 2018: initial success ~50%, **76% overall success after additional procedures**. [BMG](/docs/foundations/surgical-principles/grafts/buccal-mucosa) significantly outperforms skin grafts. |
| Staged Diversion (Neurogenic) | Urethrocutaneous Fistula | Urinary diversion for refractory UCF in neurogenic patients — Raup series 81% diversion rate for neurogenic-bladder UCF. |
| Gracilis Interposition Repair (UPF) | Urethroperineal Fistula | Transperineal gracilis interposition for acquired urethroperineal fistula. Guo series 91% success with gracilis-interposition repair. |
| Definitive Perineal Urethrostomy | Urethroperineal Fistula | Primary perineal urethrostomy as definitive endpoint for complex UPF — Klemm 2024 long-term PROs frame this as a legitimate primary option (95% success, Fuchs data). |
| CUPF Repair (Cheng Differential) | Urethroperineal Fistula | Congenital urethroperineal fistula — Cheng diagnostic differentiator prevents misdiagnosis as urethral duplication or H-type RUF; repair is tract excision with layered closure. |