Review Question - QID 216247

A 52-year-old G3P3 woman presents to clinic with a 2-year history of urinary incontinence. She has had frequent, involuntary loss of urine over the last 2 years but presented today because of 10 days of dysuria. She has been treated for 2 urinary tract infections over the past 6 months. She does not endorse any loss of urine with coughing or laughter. She has no chronic medical illnesses and no surgical history. Her temperature is 99.5°F (37.5°C), blood pressure is 120/80 mmHg, pulse is 92/min, and respirations are 15/min. Her BMI is 30 kg/m^2. On pelvic examination, the vagina is dry and atrophic with a 2-cm tender, palpable anterior vaginal mass. The mass does not change with Valsava maneuver. Her postvoid residual volume is 60 mL. Which of the following is the most likely diagnosis?