Retrograde cystograms is the procedure of choice to diagnose the presence of an enterovesical fistula. Pyelonephritis and septicemia are common complications of enterovical fistulas, because of this, prompt surgical correction of enterovesical fistulas is recommended. Improvement in Crohn's disease in response to methotrexate therapy is usually evident in 4-8 weeks. Cyclosporin A must be administered intravenously in a continuous fashion to achieve clinical response in fistulizing disease 7. In general, enteroenteric fistula, when identified, should be corrected surgically.
Infliximab is ineffective in the treatment of rectovaginal fistulas.
Gastrocolic fistulas may present with diarrhea, weight loss, small bowel bacterial overgrowth and evidence of malnutrition.