A 28-year-old patient presents with recurrent urinary tract infections and continuous wet sensation in her undergarments. On examination, the provider observes leaking of urine noted in the vagina. What structural disorder of the female reproductive system is most likely responsible for this condition?
Correct Answer: D
Rationale: The correct answer is D: bladder fistula. A bladder fistula is an abnormal connection between the bladder and another organ, leading to urine leakage into the vagina. In this case, the continuous wet sensation and urine leakage observed in the vagina indicate a communication between the bladder and the vagina. Pelvic floor prolapse (choice A) can cause urinary incontinence but does not involve direct leakage of urine into the vagina. DES exposure (choice B) is associated with reproductive tract abnormalities but not specifically with urinary incontinence. A vaginal septum (choice C) is a congenital condition where the vagina is divided by a septum, which would not directly cause urine leakage into the vagina.