A rectovaginal fistula is an abnormal connection between the lower a part of the large intestine (rectum) and also the vagina.Various things can cause rectovaginal fistula, including:
• Injury during labour and childbirth – this can be the foremost common cause.
• Radiation to the area (to treat cancer)
• Crohn disease (a disorder that can cause diarrhoea, belly pain, and other digestive problems)