This trial aims to investigate the effects of cells obtained from liposuction for repair of recto-vaginal fistula. The trial is being conducted at the Instituto de Investigación Hospital Universitario La Paz in Madrid and plans to recruit 10 subjects with recto-vaginal fistula. All subjects will receive an injection of fat derived vascular stromal fraction cells directly into the fistula. Participants will be monitored for complications and for fistula healing. The trial is expected to be completed in late 2013.