Vaginal agenesis and rectovestibular fistula. Experience utilizing distal ileum for the vaginal replacement in these patients, preserving the natural fecal reservoir

Abstract

Background: The association of rectovestibular fistula (RVF) and vaginal agenesis (VA) presents a diagnostic and management challenge. The vaginal replacement is usually performed with rectum or sigmoid, which are the natural fecal reservoirs; thus, the fecal control could be affected. We present our experience utilizing ileum to preserve the rectum and sigmoid.

Methods: We performed a retrospective study of eight patients with RVF and VA treated from May 2011 to June 2015 at two colorectal centers, at Pittsburgh and Mexico. We recorded the age at diagnosis of VA, treatment, presence of other associated malformations and outcome.

Results: Eight of forty-nine girls with RVF had an associated VA (16.3%). Three patients had a timely diagnosis and five a delayed diagnosis. Six patients were submitted to a vaginal replacement with ileum and achieved fecal control. Two are waiting for surgery.

Conclusions: A high index of suspicion of vaginal agenesis helps in a timely diagnosis in girls with RVF. The use of ileum allows for preservation of the fecal reservoirs, thus optimizing the chance for fecal control in patients with anorectal malformations.

Keywords: Anorectal malformation; Posterior sagittal anorectoplasty; Rectovestibular fistula; Vaginal agenesis; Vaginal replacement; Vaginoplasty.