Vesicovaginal fistula

**Definition:** A condition of the bladder and vagina, caused by and subsequent to childbirth, trauma, hysterectomy, medical intervention, infections, bladder calculi, endometriosis, cone biopsy, or congenital factors. This condition is characterised by the formation of an abnormal passage between the urinary bladder and the vagina, leading to the continuous involuntary discharge of urine into the vagina.