Feline Vesicovaginal Fistula
Also known as: Bladder-Vaginal Fistula
⚠ Emergency Warning Signs
Not typically an emergency condition, though significant skin infection would warrant veterinary attention.
Overview
A genuinely rare abnormal connection between the bladder and vaginal canal, which can be congenital or result from trauma (including, rarely, complications of spay surgery) — causes involuntary urine leakage through the vagina rather than normal urination, requiring surgical correction.
Symptoms
- Involuntary urine leakage (vaginal)
- Skin irritation
Causes
Can be congenital (a developmental abnormality) or acquired, most commonly from trauma or, rarely, as a complication of pelvic-area surgery including spay surgery, creating an abnormal connection between the bladder and vaginal canal. An abnormal connection between the bladder and vagina, this can be congenital or result from trauma (including difficult birth) or prior surgery in the area, causing continuous urine leakage through the vagina rather than normal urination.
Risk Factors
Congenital cases have no specific external risk factor; significant pelvic trauma or, rarely, complications from pelvic surgery for acquired cases.
Transmission
Not infectious; either congenital or resulting from trauma or surgical complication rather than something transmitted.
Incubation Period
Not applicable for congenital cases; acquired cases become apparent following the triggering trauma or surgical event.
Disease Stages & Progression
The abnormal connection allows urine to leak continuously or intermittently through the vaginal canal rather than following the normal urethral pathway, causing chronic urine leakage and often associated skin irritation given the constant moisture exposure this creates.
Early Warning Signs
Involuntary urine leakage from the vaginal area, sometimes with associated skin irritation given the chronic moisture exposure.
Advanced Symptoms
More significant, persistent leakage and skin irritation, potentially with secondary skin infection given the chronic moisture and irritation.
Diagnostic Methods
Contrast imaging showing the characteristic abnormal connection, combined with the distinctive symptom of urine leakage through the vagina rather than normal urethral urination, establishes this diagnosis.
Veterinary Examination Process
Assessment of the urine leakage pattern and any associated skin changes.
Recommended Lab Tests
Urinalysis and culture, and imaging for definitive diagnosis.
Diagnostic Imaging
Contrast imaging studies can identify the characteristic abnormal connection between the bladder and vaginal canal.
Blood Test Indicators
Urinalysis and culture if secondary infection is suspected.
Biopsy / Histopathology
Not typically needed for diagnosis.
Differential Diagnoses
Other causes of urinary incontinence — contrast imaging specifically identifies this particular abnormal connection.
Home Monitoring Guidance
Not a substitute for veterinary evaluation and imaging of persistent, abnormal urine leakage.
Veterinary Treatment Options
Surgical correction of the abnormal connection is the standard, necessary treatment to restore normal urine flow through the normal urethral pathway. Surgical closure of the abnormal connection is generally necessary to resolve the continuous leakage this fistula causes.
Surgery Requirements
Surgical correction is the standard, necessary treatment.
Recovery Timeline
Surgical recovery is typically several weeks.
Possible Complications
Chronic skin irritation and secondary infection if not surgically addressed.
Long-Term Management
Not typically needed after successful surgical correction.
Prevention
No established prevention for congenital cases; careful surgical technique during any pelvic-area surgery helps reduce this uncommon surgical complication risk.
Vaccination Availability
Not applicable.
Prognosis
Good with appropriate surgical correction.
References
American College of Veterinary Surgeons (ACVS); veterinary urology references.
Medications Used
- Antibiotics if secondary skin infection is present
- Standard peri-surgical pain management
Estimated Treatment Cost by Country
| Country | Estimated Cost Range | Notes |
|---|---|---|
| IN | 18,000–82,000 INR | |
| US | 1,800–8,200 USD | |
| UK | 1,600–7,200 GBP | |
| AU | 2,200–9,200 AUD | |
| JP | 280,000–980,000 JPY | |
| DE | 1,800–7,700 EUR | |
| BR | 3,600–15,500 BRL |
Frequently Asked Questions
Why does my cat seem to leak urine constantly rather than urinating normally?
This can genuinely reflect an abnormal connection between the bladder and vaginal canal, allowing urine to bypass the normal urethral pathway and leak continuously or intermittently through the vagina instead — this needs proper imaging diagnosis and typically surgical correction to restore normal urinary function and prevent ongoing skin irritation from the chronic leakage.