Gynaecology & Obstetrics Clinically vesicovaginal and ureterovaginal fistula are differentiated by : A USG B IVP C Cystoscopy with dye D Methylene blue three swab test 💡 Explanation Clinically vesicovaginal and ureterovaginal fistula are differentiated by : ✓ Correct Answer: D. Methylene blue three swab test