Is it safe to have a colonoscopy if you had rectovaginal fistula?

Yes: If you have a rectovaginal fistula or have had one repaired there should be no problems with a colonoscopy. The colonoscope should pass right by the area without any problems. In rare instances, the fistula may be so large, the colonoscope can pass through this fistula. Even in this instance, a trained endoscopist should be able to manage this. A colorectal surgeon can repair this for you.