## **Core Concept**
A ureterovaginal fistula is an abnormal communication between the ureter and the vagina, leading to the leakage of urine into the vagina. This condition often arises as a complication of pelvic surgery, such as hysterectomy, or from obstructed labor. The underlying issue is the disruption of the normal anatomical and functional integrity of the ureter and vagina.

## **Why the Correct Answer is Right**
The correct answer, **continuous urinary incontinence**, is a direct consequence of the abnormal connection between the ureter and vagina. When urine continuously leaks from the ureter into the vagina, it results in incontinence that is not related to the normal process of urination. This type of incontinence is a hallmark symptom of ureterovaginal fistulae.

## **Why Each Wrong Option is Incorrect**
- **Option A: Stress incontinence** is incorrect because it refers to the involuntary leakage of urine on effort or exertion, or on sneezing or coughing, which is not directly related to the continuous flow of urine from a ureterovaginal fistula.
- **Option B: Urge incontinence** is incorrect because it involves the involuntary leakage accompanied by or immediately preceded by urgency, which does not accurately describe the constant leakage seen with a ureterovaginal fistula.
- **Option D: Overflow incontinence** is incorrect because it occurs when the bladder is overdistended and cannot hold any more urine, leading to leakage, which is not the mechanism behind a ureterovaginal fistula.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the diagnosis of a ureterovaginal fistula can often be confirmed by the **intravenous pyelogram (IVP) or CT urogram**, which can show the site of the fistula and the level of obstruction. Additionally, a **Methylene blue test** or **Wood's lamp examination** can help identify the fistula by observing the leakage of dye from the vagina.

## **Correct Answer: C. Continuous urinary incontinence**