A fistula is a passage between two tubular organs. Thus, a colovaginal fistula is a passage that is formed between the vagina and the colon. It is one of the different forms of genitourinary fistula. The other forms are uterovaginal fistula (i.e. a fistula between distal ureters and vagina), urethrovaginal fistula (i.e. a fistula between urethra and vagina), and vesicovaginal fistula (i.e. a fistula between urinary bladder and vagina). A colovaginal fistula may result following some kind of tissue damage. For instance, the trauma suffered during childbirth especially at an early age may lead to a vaginal fistula. It is also commonly associated with diverticular disease, pelvic or colonic malignancies, inflammatory bowel disease, post-pelvic ratiotherapy (especially one that is involving the distal sigmoid colon and/or rectum), polypropylene mesh sacrocolpopexy, and tension-free vaginal tape procedure.1
A colovaginal fistula forms a communication between vagina and colon, and may be referred to in specific terms depending on the site of fistulation.1 For instance, a fistula between the rectum and the vagina is termed rectovaginal fistula.
1 Bickle, I. et al. (n.d.). Colovaginal fistula. Retrieved from [Link]