Urinary Leakage After Hysterectomy: Could It Be a Urinary Fistula?
New urine-like vaginal leakage after hysterectomy should be evaluated, especially when the wetness is continuous day and night. It may be a urinary fistula, most commonly vesicovaginal fistula from the bladder or ureterovaginal fistula from an injured ureter, but not every postoperative leak is a fistula. Stress incontinence, urgency incontinence, infection and non-urinary vaginal discharge can also occur. A focused history plus examination, dye testing, cystoscopy and CT urography when needed can usually identify where the fluid is coming from and guide treatment.
The leakage pattern gives useful clues
| Pattern | Possible explanation |
|---|---|
| Continuous watery vaginal leakage | Urinary fistula is an important possibility. |
| Leak only with cough, sneeze or exercise | Stress urinary incontinence more likely. |
| Leak preceded by sudden urgency | Urgency incontinence more likely. |
| Normal urination plus continuous vaginal leakage | VVF or ureterovaginal fistula can both do this. |
| Leak with flank pain or fever | Raises concern for ureteric injury, obstruction and infection. |
When can a fistula start?
A direct opening may cause early leakage. Thermal or ischemic injury can take days or weeks to break down, so delayed onset does not exclude surgical urinary-tract injury.
What tests may be done?
- Speculum examination to see where fluid appears.
- Bladder dye test to look for a vesicovaginal connection.
- Cystoscopy to inspect the bladder and ureteric openings.
- CT urography with delayed images to assess ureters and extravasation.
- Urine culture and kidney-function tests.
What if bladder dye is negative but leakage continues?
Ureterovaginal fistula becomes more important to exclude because urine from the injured ureter may bypass the bladder completely. Upper-tract imaging and retrograde or antegrade studies can define the injury.
Treatment depends on the source
| Cause | Possible treatment |
|---|---|
| Stress/urgency incontinence | Continence treatment rather than fistula surgery. |
| Small fresh VVF | Selected period of bladder drainage. |
| Established VVF | Vaginal or abdominal/minimally invasive fistula repair. |
| Ureterovaginal fistula | DJ stent or nephrostomy initially; reconstruction if it does not heal. |
| Distal ureteric defect | Reimplantation +/- bladder mobilisation. |
A simple way to separate common causes of leakage after hysterectomy
Timing and pattern are useful clues. Stress incontinence causes leakage with cough, laugh or exertion. Urgency incontinence follows a sudden urge. Vesicovaginal fistula typically causes continuous or near-continuous wetness, although the woman may still void. Ureterovaginal fistula is particularly suggestive when normal voiding continues but there is persistent watery vaginal leakage starting days after surgery.
Not every postoperative watery discharge is urine. A bedside/clinic dye test can help identify bladder leakage, and creatinine testing of collected fluid can confirm that the fluid is urine. If a bladder dye test is negative but suspicion remains, CT urography with delayed excretory images helps assess the ureters and detect urinoma or ureterovaginal fistula.
Early diagnosis protects the kidney and often expands treatment options. A ureteric injury that can be crossed may heal with a DJ stent; obstruction or infection may need nephrostomy; an established bladder fistula may need planned repair. Waiting simply because leakage is “expected after hysterectomy” can allow infection, skin injury or silent loss of kidney function to progress.
When to seek urgent rather than routine review
Continuous leakage alone is distressing but not usually an emergency. Urgent assessment is needed when it is accompanied by fever, flank pain, vomiting, reduced urine output or increasing abdominal distension because these can indicate infected obstruction, urinoma or another postoperative complication.
Heavy vaginal bleeding, severe pelvic pain or feeling faint also warrants urgent postoperative evaluation regardless of whether the fluid is urine. If a nephrostomy or stent has already been placed, fever or sudden failure of drainage should be treated promptly.
For stable leakage without systemic symptoms, arrange urology or gynaecology review rather than repeatedly changing pads and waiting for the routine postoperative visit. Earlier localisation can protect renal function and simplify planning.
Do not ignore these warning signs
- Fever or chills.
- Flank pain or worsening abdominal pain.
- Reduced urine output.
- Repeated vomiting.
- Increasing wound or drain fluid, or severe weakness.
What to bring for consultation
- Operative and discharge records from the hysterectomy, Caesarean section or pelvic surgery.
- CT urography, ultrasound or MRI images/reports if already performed.
- Cystoscopy, dye-test or ureteric stent records if available.
- Serum creatinine, urine routine and culture.
- A simple description of when leakage started and whether normal urination still occurs.
- Details of fever, pelvic pain, drain output, wound leakage or previous repair attempts.
FAQs
How can I know whether the fluid is urine?
The pattern is suggestive but testing is more reliable. Clinicians can use dye tests, imaging and sometimes fluid creatinine.
Can I have a fistula even if I urinate normally?
Yes. Normal urethral voiding can continue with both VVF and ureterovaginal fistula.
Should I wait months before seeing a urologist?
No. Early diagnosis is useful even if definitive repair is planned later because obstruction or infection may need immediate treatment.
Will I necessarily need surgery?
No. Some small fresh bladder fistulas or partial ureteric injuries heal with drainage, but many established defects need repair.
Could it just be stress incontinence?
It can be, but continuous leakage, especially through the vagina, deserves evaluation for fistula first.
Related reading
- Urinary Fistula After Gynecological Surgery
- Vesicovaginal Fistula: Symptoms, Diagnosis and Treatment
- Ureterovaginal Fistula After Hysterectomy
- Ureteric Injury During Gynecological Surgery
- Urologist in Latur
References
- European Association of Urology. EAU Guidelines on Non-neurogenic Female LUTS: Urinary Fistula, 2026 https://uroweb.org/guidelines/non-neurogenic-female-luts/chapter/disease-management
- European Association of Urology. EAU Guidelines on Urological Trauma, 2026 https://uroweb.org/guidelines/urological-trauma
- Thompson JC, et al. Repair of Vesicovaginal Fistulae: A Systematic Review. Obstet Gynecol. 2024;143:229-241. PMID: 38033311 https://pubmed.ncbi.nlm.nih.gov/38033311/