Parastomal Hernia After Urinary Diversion
Parastomal hernia can impair appliance fit, cause pain or obstruction, and complicate urinary drainage. A radiologic hernia does not by itself establish a need for repair. Assessment should separate an incidental imaging finding from a symptomatic hernia and define the conduit or catheterizable-channel anatomy before choosing treatment.[1][2][3]
This page covers urinary stomas, including ileal conduits and continent catheterizable channels. Much of the abdominal-wall literature concerns fecal stomas. In particular, the 2022 ASCRS ostomy guideline explicitly excludes urostomies; its recommendations should not be presented as a urinary-diversion guideline.[4]
Incidence and Risk Assessment
Reported incidence depends on imaging, the hernia definition, follow-up duration and the patients available for assessment.
| Conduit cohort | Findings | Interpretation |
|---|---|---|
| Hussein 2018: 383 patients | 75 developed radiologic hernia; 23/75 were symptomatic and 11/75 received treatment. Estimated radiologic incidence was 9%, 23% and 32% at 1, 2 and 3 years. | The 31% symptomatic and 15% treated figures use all 75 hernias as the denominator, not all operated patients or only symptomatic patients.[1] |
| Ghoreifi 2022: 361 patients | 108 developed radiologic hernia; 26% of these progressed during follow-up. | Progression included worsening radiologic classification or surgery; this is not a universal annual progression rate.[2] |
| Liu 2014 | Of 516 patients, 199 with sufficient follow-up were analyzed; 58 had a hernia and 26/58 underwent repair. | Selection and follow-up differ from the other cohorts; the repair proportion should not be pooled into a single counseling estimate.[5] |
Higher BMI, prior abdominal surgery and comorbidity have been associated with hernia development in observational cohorts. Associations and effect sizes vary; they are not a validated individual risk calculator. Optimize modifiable risks and discuss the patient's symptoms and operative fitness, without promising that risk disappears after a particular postoperative year.[1][2][5]
Evaluation and Initial Management
- Examine the stoma and abdominal wall, including appliance seal, skin injury, reducibility and any associated midline hernia. Review the original diversion operation and prior repairs.
- Use cross-sectional imaging when needed to define the defect, hernia contents, conduit or channel course, associated ventral hernia and upper-tract abnormalities. Investigate impaired drainage or recurrent infection rather than assuming the hernia is the only cause.
- For a reducible hernia with little symptom burden, offer stoma-nurse review, appliance adjustment and a fitted support garment when helpful. Reassess worsening symptoms; a support belt does not repair the fascial defect.
- Consider elective repair for persistent pain, major appliance problems, recurrent obstruction or meaningful functional impairment after weighing recurrence and surgical morbidity. Acute pain with an irreducible swelling, vomiting/obstruction, systemic illness or threatened bowel or stoma viability requires urgent surgical assessment. The emergency approach depends on the findings.[3][6][7]
Prevention at Ileal Conduit Creation
Routine prophylactic mesh for every ileal conduit is not established. Conduit-specific randomized trials conflict, and the two more recent trials did not demonstrate benefit. They studied different materials and outcome definitions; they do not constitute a head-to-head comparison of mesh types.[8][9][10]
| Trial | Population and intervention | Result and practical limit |
|---|---|---|
| Liedberg 2020 | 242 randomized at three centers; lightweight synthetic sublay mesh versus conventional construction | Clinical hernia within 24 months: 10/92 evaluable mesh patients versus 20/89 controls (11% versus 23%; p=0.06). Time-to-event analysis favored mesh, HR 0.45 (95% CI 0.24–0.86). Operating time was longer; no increase in mesh-related complications was detected.[8] |
| PUBMIC 2024 | 146 randomized; FlexHD biologic mesh versus no mesh | At median 24-month follow-up, radiologic hernias occurred in 18 versus 19, and clinical hernias in 8 versus 8. The trial did not demonstrate a protective effect. No definite mesh-related adverse events were reported, which does not exclude uncommon or later harms.[9] |
| Donahue 2025 phase 3 trial | 178 randomized; 137 evaluable; semiabsorbable Ultrapro mesh behind rectus and in front of the posterior sheath | At the final 24-month assessment, radiologic hernia occurred in 32/68 with mesh versus 23/69 controls (47% versus 33%); risk difference 14 percentage points (95% CI −4 to 31; p=0.14). No preventive benefit was demonstrated; this does not prove that mesh causes harm.[10] |
The 2018 Cochrane review included 10 trials and 844 participants across ostomy surgery. Hernia incidence favored mesh, but certainty was low, heterogeneity substantial, and a reduction in reoperation was not demonstrated. Its search predates the three conduit trials above. Likewise, a 2024 network meta-analysis mixing stoma types and techniques predates the negative 2025 trial. Neither supports treating a pooled ranking as definitive guidance for all urinary stomas.[11][12]
A 2023 cost-effectiveness analysis was a model, dependent on assumed preventive benefit and mesh complications; it is not evidence of actual savings after the more recent trial results.[13]
Conduit construction should preserve perfusion and allow unobstructed passage without excessive fascial enlargement. One small retrospective cohort reported fewer hernias with an oblique passage and separate sheath fixation, but its proposed 2.4-cm aperture is not a universal caliber target for every conduit and mesentery.[14]
Planning Repair Around Urinary Anatomy
The conduit may have limited length and mobility because of its mesentery and ureteric anastomoses. Dissection must protect blood supply and avoid bowel or ureteric injury, kinking and obstruction. A concomitant ureteroenteric stricture or ventral hernia may change the reconstruction. Mesh is not normally continuously exposed to urine; urinary leakage, infection or erosion are complications to prevent and manage.[3][6][15]
A urologist and an abdominal-wall surgeon should plan complex or recurrent repairs together. Select access, mesh plane and configuration according to anatomy, contamination, prior mesh and surgeon expertise. Available urinary-diversion evidence is predominantly observational; there is no universally superior repair.[3][7]
| Configuration | Anatomical principle | Main limitation |
|---|---|---|
| Keyhole | Mesh has an aperture for the stoma limb. | Aperture sizing must avoid constriction while limiting recurrent herniation. |
| Sugarbaker | The stoma limb travels laterally relative to the mesh; the retromuscular variant offsets the anterior and posterior fascial openings. | Adequate length and safe lateralization are essential; do not tension or kink a short conduit to force this configuration. |
| Stoma resiting with abdominal-wall repair | Relocate the stoma when its position or surrounding tissue is unsuitable. | Both the original defect and new site need planning; relocation does not remove recurrence risk. |
These principles and their technical risks are described in operative reports and the open retromuscular trial; the names alone do not establish the correct mesh plane or approach for an individual patient.[7][16][6]
Randomized comparison of repair configuration
Maskal 2024 randomized 150 patients undergoing open retromuscular repair, including 25 ileal conduits; the remainder had fecal stomas. Patients were randomized only after both configurations were judged feasible. Two-year recurrence was 13/75 (17%) with Sugarbaker and 18/75 (24%) with keyhole; adjusted RR 0.87 (95% CI 0.42–1.69). Sugarbaker was not superior. The study was powered for a large superiority difference, not equivalence, and does not establish a conduit-specific winner or compare minimally invasive intraperitoneal repairs. Quality of life improved in both groups, with no demonstrated between-group advantage.[7]
Interpreting urinary-diversion series
A French retrospective series of 51 conduit repairs reported 35% recurrence at median 15.3 months; recurrence was associated with technique, but nonrandom selection prevents a causal ranking. Another 35-patient conduit series reported eight reoperations for recurrence and three mesh removals for infection. These studies support frank counseling about recurrent hernia and revision morbidity.[17][18]
Low recurrence in a small selected series should not be treated as superiority: in the 3-D funnel-mesh report, only 27 of 40 operated patients participated in follow-up, with two recurrences among those assessed. Larger mixed-stoma series and minimally invasive meta-analyses also combine different patients and repairs. Reported lower mortality after minimally invasive surgery is an association, not proof that changing access reduces an individual patient's mortality by the reported relative percentage.[19][20][21]
Continent Catheterizable Stomas
Assess catheter passage, emptying, leakage and the continence mechanism as well as the hernia. Preserve the channel and its vascular pedicle when feasible; revise the continence mechanism if it is dysfunctional, rather than automatically reconstructing every channel during hernia repair.[22][16]
Historical evidence illustrates the problem but is limited: Helal's series assessed 21 patients, of whom 19 underwent repair; 13 had associated incontinence. The reported 89.5% repair success at mean 23.4 months is a small-series result, not a contemporary benchmark or a requirement to operate on every asymptomatic hernia. A four-patient laparoscopic resiting report included two continent and two incontinent stomas; maintained urinary function did not mean that all repairs were recurrence-free.[22][16]
Counseling and Follow-up
Discuss recurrence, bowel or urinary injury, obstruction, infection, mesh complications and possible further surgery. Follow both abdominal-wall symptoms and urinary function. New hydronephrosis, reduced conduit output, difficult catheterization, recurrent febrile infection or substantial pain warrants reassessment.
Risk estimates should match the population: in 17,625 older Medicare beneficiaries undergoing elective parastomal repair, 30-day mortality was 3.8% and the five-year incidence of another parastomal or incisional hernia operation was 21.1%. This mixed-stoma claims cohort is not a conduit-specific recurrence rate. Reversal of a fecal stoma, a comparator in that study, is not generally an available solution for a urinary diversion.[23]
See Also
- Ileal Conduit
- Indiana Pouch
- Kock Pouch
- Appendicovesicostomy
- Continent Catheterizable Channels Principles
- Ureteroenteric Anastomotic Stricture Repair
Videos
References
1. Hussein AA, Ahmed YE, May P, et al. Natural history and predictors of parastomal hernia after robot-assisted radical cystectomy and ileal conduit urinary diversion. J Urol. 2018;199(3):766–773. doi:10.1016/j.juro.2017.08.112
2. Ghoreifi A, Allgood E, Whang G, et al. Risk factors and natural history of parastomal hernia after radical cystectomy and ileal conduit. BJU Int. 2022;130(3):381–388. doi:10.1111/bju.15658
3. Cao R, Shao X, Li J. Management and outcomes profiles of parastomal hernia after radical cystectomy and ileal conduit urinary diversion: a systematic review. Hernia. 2025;29(1):180. doi:10.1007/s10029-025-03359-y
4. Davis BR, Valente MA, Goldberg JE, et al. The American Society of Colon and Rectal Surgeons clinical practice guidelines for ostomy surgery. Dis Colon Rectum. 2022;65(10):1173–1190. doi:10.1097/DCR.0000000000002498
5. Liu NW, Hackney JT, Gellhaus PT, et al. Incidence and risk factors of parastomal hernia in patients undergoing radical cystectomy and ileal conduit diversion. J Urol. 2014;191(5):1313–1318. doi:10.1016/j.juro.2013.11.104
6. Dewulf M, Pletinckx P, Nachtergaele F, et al. How-I-do-it: minimally invasive repair of ileal conduit parastomal hernias. Langenbecks Arch Surg. 2022;407(3):1291–1301. doi:10.1007/s00423-021-02393-5
7. Maskal SM, Ellis RC, Fafaj A, et al. Open retromuscular Sugarbaker vs keyhole mesh placement for parastomal hernia repair: a randomized clinical trial. JAMA Surg. 2024;159(9):982–989. doi:10.1001/jamasurg.2024.1686
8. Liedberg F, Kollberg P, Allerbo M, et al. Preventing parastomal hernia after ileal conduit by the use of a prophylactic mesh: a randomised study. Eur Urol. 2020;78(5):757–763. doi:10.1016/j.eururo.2020.07.033
9. Djaladat H, Ghoreifi A, Tejura T, et al. Prophylactic use of biologic mesh in ileal conduit (PUBMIC): a randomized clinical trial. J Urol. 2024;211(6):743–753. doi:10.1097/JU.0000000000003902
10. Donahue TF, Assel M, Cha EK, et al. Evaluating benefits of peristomal mesh placement at the time of radical cystectomy and ileal conduit formation: a phase 3 randomized controlled trial. J Urol. 2025. doi:10.1097/JU.0000000000004703
11. Jones HG, Rees M, Aboumarzouk OM, et al. Prosthetic mesh placement for the prevention of parastomal herniation. Cochrane Database Syst Rev. 2018;7:CD008905. doi:10.1002/14651858.CD008905.pub3
12. Hinojosa-Gonzalez DE, Saffati G, Kronstedt S, et al. Use of prophylactic mesh to prevent parastomal hernia formation: a systematic review, meta-analysis and network meta-analysis. Hernia. 2024;29(1):22. doi:10.1007/s10029-024-03219-1
13. Kanabolo DL, Park S. Prophylactic mesh placement with ileal conduit: a cost-effectiveness analysis. Urology. 2023;177:197–203. doi:10.1016/j.urology.2023.03.041
14. Tanaka T, Yamasaki K, Nofuji S, et al. Development and preliminary evaluation of a novel procedure for creation of an ileal conduit stoma aimed at preventing parastomal hernia. Int J Urol. 2024;31(5):512–518. doi:10.1111/iju.15394
15. Xu AJ, Shakir NA, Jun MS, Zhao LC. Robotic-assisted repair of post-ileal conduit parastomal hernia: technique and outcomes. Urology. 2021;158:232–236. doi:10.1016/j.urology.2021.08.030
16. Stout TE, Kasabwala K, Leslie DB, Elliott SP. A laparoscopic approach to parastomal hernia repair with re-siting of urinary stoma. Urology. 2021;152:199. doi:10.1016/j.urology.2021.01.020
17. Bel N, Blanc PY, Moszkowicz D, et al. Surgical management of parastomal hernia following radical cystectomy and ileal conduit: a French multi-institutional experience. Langenbecks Arch Surg. 2023;408(1):344. doi:10.1007/s00423-023-03062-5
18. Roussel E, Dupuis H, Grosjean J, Cornu JN, Khalil H. Initial and recurrent management of parastomal hernia after cystectomy and ileal conduit urinary diversion: a 10-year single-center experience. Hernia. 2024;29(1):57. doi:10.1007/s10029-024-03207-5
19. Tully KH, Roghmann F, Pastor J, Noldus J, von Bodman C. Parastomal hernia repair with 3-D mesh implants after radical cystectomy and ileal conduit urinary diversion — a single-center experience using a purpose made alloplastic mesh implant. Urology. 2019;131:245–249. doi:10.1016/j.urology.2019.05.006
20. Holland AM, Lorenz WR, Mead BS, et al. Long-term outcomes after open parastomal hernia repair at a high-volume center. Surg Endosc. 2025;39(1):639–648. doi:10.1007/s00464-024-11375-9
21. Abdelsamad A, Mohammed MK, Almoshantaf MB, et al. Minimally invasive versus open parastomal hernia repair: a comprehensive systematic review and meta-analysis. World J Surg. 2025. doi:10.1002/wjs.70013
22. Helal M, Austin P, Spyropoulos E, et al. Evaluation and management of parastomal hernia in association with continent urinary diversion. J Urol. 1997;157(5):1630–1632. PubMed.
23. Howard R, Rob F, Thumma J, et al. Contemporary outcomes of elective parastomal hernia repair in older adults. JAMA Surg. 2023;158(4):394–402. doi:10.1001/jamasurg.2022.7978