Conservative Management of Rectourethral Fistula
Conservative management of rectourethral fistula (RUF) is a monitored trial of drainage and supportive care, reasonable for selected small fistulas in viable, nonirradiated tissue. Contamination and infection are controlled first. Chronic, epithelialized, irradiated or tissue-destructive fistulas usually require reconstruction or a diversion strategy.[1][2]
For surgical alternatives see Transperineal Approach to RUF, York-Mason Repair, ERAF for RUF, and Transanal Minimally Invasive Repair. See Fecal Diversion for stoma selection and reversal planning.
What “conservative” means
The literature sometimes groups all treatment without direct fistula closure as conservative management. That can include suprapubic cystostomy, nephrostomy or an intestinal stoma. Conservative management serves three goals:[2][3]
- Attempt closure with dependable urinary drainage and reassessment in an appropriate simple fistula.
- Prepare for repair by controlling contamination, draining collections and letting injured tissue recover. Temporary urinary and fecal diversion may be needed.
- Long-term symptom control accepts a persistent tract when reconstruction is unsuitable or declined, with an explicit plan for infection, pain, leakage and drainage.
A 2026 systematic review of 34 studies and 455 post-prostatectomy RUF cases reported generally less than 50% success for the minority receiving observation, fluids and antibiotics; it reported urinary and fecal diversion separately.[1] Median durations were one month for urinary catheter and three months for stoma in the review.[1]
Initial assessment and source control
Assess fistula anatomy, urethral patency, bladder and bowel function, prior radiation or ablation, necrosis, abscess and malignancy. Cystourethroscopy, rectal examination or endoscopy and urethrography define the communication; cross-sectional imaging helps when collections or complex disease are suspected. In men previously treated with combined prostate radiotherapy, Marguet et al. advised against biopsy of rectal ulcers; all six radiation-RUF cases in their series followed rectal biopsy or hemorrhoidectomy.[13] Closing a tract may uncover substantial SUI.[2][4]
Sepsis, an undrained abscess, peritonitis, uncontrolled pain or ineffective urinary drainage requires prompt treatment without a waiting period. Antibiotics treat infection, and drainage or diversion provides source control as indicated. Skin care, nutrition, hydration and catheter support continue while the definitive plan is developed.[2][4]
| Clinical situation | Reasonable direction |
|---|---|
| Small, recent fistula; viable tissue; symptoms controlled; no undrained infection | Consider urinary drainage and close follow-up after specialist assessment |
| Fecaluria or substantial fecal contamination | Assess urgently for infection and the need for fecal diversion; this strongly favors diversion in many patients |
| Large defect, ischemic/radiated tissue, stricture or persistent epithelialized tract | Plan reconstruction or durable diversion early; prolonged catheterization has a low likelihood of definitive closure |
| Patient declines repair or cannot tolerate it | Agree on a symptom-focused plan and escalation triggers; ongoing surveillance is still necessary |
Fecaluria is a serious selection factor. Thomas's recommendation for colostomy arose from 13 post-prostatectomy cases. Three patients without fecaluria healed with conservative treatment, and one attempted immediate repair without colostomy in the presence of fecaluria failed.[5]
Blumberg's treatment algorithm, built on two rectal injuries in the first 200 laparoscopic prostatectomies at one institution, includes conservative management of a small RUF with urinary catheterization or diversion and antibiotics as needed. Fecal diversion is reserved for fistulas that fail to heal, and operative repair for those that persist despite diversion.[19]
What the reported closure rates actually mean
| Study | Results | Limits |
|---|---|---|
| Thomas 2010 | 3/3 selected patients healed without colostomy; 3/9 healed after colostomy plus urethral catheterization | Tiny, nonrandomized groups selected by presentation.[5] |
| Keller 2015 | 14/30 healed without definitive fistula surgery: eight without fecal diversion and six following diversion | The 27% and 20% figures both use all 30 patients as denominator.[3] |
| al-Ali 1997 | 14/30 healed after colostomy plus suprapubic cystostomy | Posttraumatic cohort, mostly missile injuries.[6] |
| Serra-Aracil 2018 | 1/10 healed with bladder catheterization alone; 1/9 remaining patients healed after urinary and fecal exclusion | Most still needed repair despite diversion.[7] |
Keller's overall 90% healing included subsequent operations. Fifteen of 20 diverted patients eventually had stoma closure, while 11/30 had long-term urinary incontinence and six required permanent urinary diversion or drainage. Fistula closure, urinary function and freedom from stomas are separate outcomes.[3]
Reassessment and timing of reconstruction
Comparative trials have not validated a universal three-to-six-month waiting period for acquired rectourethral fistula repair.[2] Chen's review suggests reconsidering repair when a simple tract persists beyond roughly 12 weeks. Boushey's historical two-patient report proposed three to six months of diversion. Both are practice frameworks, and no randomized timing protocol exists.[2][8]
Reassessment is planned in advance and brought forward when drainage fails, symptoms worsen, infection persists or the anatomy makes spontaneous closure implausible. In a conservative-first post-prostatectomy series, repeat cystoscopy and cystography assessed fistula closure during catheter drainage.[23] In a surgical-repair series, radiographic confirmation of closure preceded reversal of urinary or fecal diversion.[24] A delay for tissue recovery before reconstruction serves a different purpose from waiting for a chronic tract to seal. Gupta's 15-patient series delayed reconstruction at least 12 weeks after bowel diversion, and it included congenital and traumatic cases as well as iatrogenic fistulas.[9]
Adjuncts do not replace definitive management
Sealants and endoscopic treatment. Wilbert's two successful cases combined excision, suturing, fulguration and fibrin application. Giuliani's four closures in five patients followed direct transperineal repair with a TachoSil patch. Neither isolates a sealant effect or represents nonoperative treatment. Evans's 18/19 successful outcomes combined urinary injuries, complications and five fistulas; 94.7% is not an RUF sealant cure rate.[10][11][12]
Hyperbaric oxygen. Four men who received HBOT in Marguet's six-case radiation-RUF series did not achieve healing with it. Hammad's 2026 matched study involved perianal, rectovaginal and pouch-vaginal fistulas and not RUF. Overall healing did not differ significantly, although some recurrence and subgroup outcomes favored HBOT. Evidence for HBOT in RUF is therefore lacking. An adjunctive role in radiation tissue injury is a specialist judgment and should not delay needed drainage or repair.[13][14]
Durable diversion and symptom-focused care
Radiation or ablation history warrants early discussion of reconstructive burden. Linder's severe referral cohort had permanent urinary diversion in 27/29 and colostomy in 25/29 radiation or ablation cases.[15] By contrast, Vanni reported single-stage closure in 84% of 39 radiation or ablation fistulas treated with transperineal reconstruction, with permanent fecal diversion in 31%.[16] In the Hechenbleikner systematic review of 416 surgically treated patients, permanent fecal diversion was 10.6% and permanent urinary diversion 8.3%.[20]
Martins reported permanent dual diversion in 5/10 radiation or ablation patients versus 0/13 surgery-only patients. All 23 initially received colostomy and suprapubic drainage. Their small, severe cohort supports discussing permanent diversion when tissue destruction or organ dysfunction makes reconstruction burdensome.[4]
Venkatesan described three patients who chose continued conservative care after being offered surgery. Their persistent complex fistulas required monitoring and episodic symptom treatment. This is an informed quality-of-life option.[17]
Preventing progression after rectal injury
Recognizing and repairing a rectal injury during prostatectomy is distinct from treating an established RUF. Roberts reported 16 injuries recognized and primarily repaired, with two later fistulas. Four repairs had omental interposition and none of them developed RUF. Both unrecognized injuries in the series produced persistent fistulas that needed transrectal advancement flap repair.[18]
Earlier series reported the same pattern. Borland and Walsh identified 10 rectal injuries among 1,000 retropubic prostatectomies, all in nonirradiated patients. Nine were recognized and repaired intraoperatively in two layers with omental interposition and no colostomy; the delayed injury was repaired with a temporary colostomy. None developed a urethrorectal fistula.[21] In Guillonneau's 1,000 laparoscopic prostatectomies, 13 rectal injuries occurred. Nine of the 11 diagnosed and repaired intraoperatively healed primarily without colostomy, and two developed peritonitis.[22] A delayed diagnosis needs prompt assessment for leak and sepsis.
References
1. de Angelis M, Scilipoti P, Leni R, et al. "Clinical and surgical management of recto-urinary fistula after radical prostatectomy: a systematic review on current evidence." Prostate Cancer Prostatic Dis. 2026. doi:10.1038/s41391-026-01114-7
2. Chen S, Gao R, Li H, Wang K. "Management of acquired rectourethral fistulas in adults." Asian J Urol. 2018;5(3):149–154. doi:10.1016/j.ajur.2018.01.003
3. Keller DS, Aboseif SR, Lesser T, et al. "Algorithm-based multidisciplinary treatment approach for rectourethral fistula." Int J Colorectal Dis. 2015;30(5):631–638. doi:10.1007/s00384-015-2183-0
4. Martins FE, Felicio J, Oliveira TR, et al. "Adverse features of rectourethral fistula requiring extirpative surgery and permanent dual diversion: our experience and recommendations." J Clin Med. 2021;10(17):4014. doi:10.3390/jcm10174014
5. Thomas C, Jones J, Jäger W, et al. "Incidence, clinical symptoms and management of rectourethral fistulas after radical prostatectomy." J Urol. 2010;183(2):608–612. doi:10.1016/j.juro.2009.10.020
6. al-Ali M, Kashmoula D, Saoud IJ. "Experience with 30 posttraumatic rectourethral fistulas: presentation of posterior transsphincteric anterior rectal wall advancement." J Urol. 1997;158(2):421–424. doi:10.1016/s0022-5347(01)64493-8
7. Serra-Aracil X, Labró-Ciurans M, Mora-López L, et al. "The place of transanal endoscopic surgery in the treatment of rectourethral fistula." Urology. 2018;111:139–144. doi:10.1016/j.urology.2017.08.049
8. Boushey RP, McLeod RS, Cohen Z. "Surgical management of acquired rectourethral fistula, emphasizing the posterior approach." Can J Surg. 1998;41(3):241–244. PubMed.
9. Gupta G, Kumar S, Kekre NS, Gopalakrishnan G. "Surgical management of rectourethral fistula." Urology. 2008;71(2):267–271. doi:10.1016/j.urology.2007.10.042
10. Wilbert DM, Buess G, Bichler KH. "Combined endoscopic closure of rectourethral fistula." J Urol. 1996;155(1):256–258. PubMed. doi:10.1016/s0022-5347(01)66612-6
11. Giuliani G, Guerra F, Coletta D, et al. "Repair of transperineal recto-urethral fistula using a fibrin sealant haemostatic patch." Colorectal Dis. 2016;18(11):O432–O435. doi:10.1111/codi.13518
12. Evans LA, Ferguson KH, Foley JP, Rozanski TA, Morey AF. "Fibrin sealant for the management of genitourinary injuries, fistulas and surgical complications." J Urol. 2003;169(4):1360–1362. doi:10.1097/01.ju.0000052663.84060.ea
13. Marguet C, Raj GV, Brashears JH, et al. "Rectourethral fistula after combination radiotherapy for prostate cancer." Urology. 2007;69(5):898–901. doi:10.1016/j.urology.2007.01.044
14. Hammad AF, Erkaya M, Hull TL, et al. "Impact of hyperbaric oxygen therapy on complex perineal fistula healing." Colorectal Dis. 2026;28(3):e70398. doi:10.1111/codi.70398
15. Linder BJ, Umbreit EC, Larson D, et al. "Effect of prior radiotherapy and ablative therapy on surgical outcomes for the treatment of rectourethral fistulas." J Urol. 2013;190(4):1287–1291. doi:10.1016/j.juro.2013.03.077
16. Vanni AJ, Buckley JC, Zinman LN. "Management of surgical and radiation-induced rectourethral fistulas with an interposition muscle flap and selective buccal mucosal onlay graft." J Urol. 2010;184(6):2400–2404. doi:10.1016/j.juro.2010.08.004
17. Venkatesan K, Zacharakis E, Andrich DE, Mundy AR. "Conservative management of urorectal fistulae." Urology. 2013;81(6):1352–1356. doi:10.1016/j.urology.2012.10.040
18. Roberts WB, Tseng K, Walsh PC, Han M. "Critical appraisal of management of rectal injury during radical prostatectomy." Urology. 2010;76(5):1088–1091. doi:10.1016/j.urology.2010.03.054
19. Blumberg JM, Lesser T, Tran VQ, Aboseif SR, Bellman GC, Abbas MA. "Management of rectal injuries sustained during laparoscopic radical prostatectomy." Urology. 2009;73(1):163–166. doi:10.1016/j.urology.2008.08.473
20. Hechenbleikner EM, Buckley JC, Wick EC. "Acquired rectourethral fistulas in adults: a systematic review of surgical repair techniques and outcomes." Dis Colon Rectum. 2013;56(3):374–383. doi:10.1097/DCR.0b013e318274dc87
21. Borland RN, Walsh PC. "The management of rectal injury during radical retropubic prostatectomy." J Urol. 1992;147(3 Pt 2):905–907. doi:10.1016/s0022-5347(17)37418-9
22. Guillonneau B, Gupta R, El Fettouh H, Cathelineau X, Baumert H, Vallancien G. "Laparoscopic management of rectal injury during laparoscopic radical prostatectomy." J Urol. 2003;169(5):1694–1696. doi:10.1097/01.ju.0000059860.00022.07
23. van der Graaf SH, Wit EMK, Beets GL, et al. "Management in robot-assisted radical prostatectomy patients with recto-urethral fistulas: the York–Mason technique." World J Urol. 2025;43(1):604. doi:10.1007/s00345-025-05996-5
24. Nfonsam VN, Mateka JJL, Prather AD, Marcet JE. "Short-term outcomes of the surgical management of acquired rectourethral fistulas: does technique matter?" Res Rep Urol. 2013;5:47–51. doi:10.2147/RRU.S28002