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Colovaginal Fistulas: Presentation, Evaluation, and Management
Mitchell B Berger1, Nikhila Khandwala, Dee E Fenner
1From the *Michigan Bowel Control Program, University of Michigan Health Systems; †Pelvic Floor Research Group, Department of Obstetrics and Gynecology, University of Michigan School of Medicine; and ‡Department of Surgery, University of Michigan Health Systems, Ann Arbor, MI.
Colovaginal fistulas, often caused by diverticulitis, present with stool or flatus per vagina. Sigmoid resection with anastomosis effectively resolves symptoms in most patients, highlighting the need for multidisciplinary care.
Area of Science:
- Gastroenterology
- Gynecology
- Colorectal Surgery
Background:
- Colovaginal fistulas are rare but complex conditions.
- Diagnosis and management can be challenging, often requiring a multidisciplinary approach.
Purpose of the Study:
- To review a single institution's experience with colovaginal fistulas.
- To provide guidance for the identification and management of these fistulas.
Main Methods:
- Retrospective chart review of 19 patients treated between 1990 and 2011.
- Analysis of presenting characteristics, evaluation methods, and treatment outcomes.
Main Results:
- The most common etiology was diverticulitis (79%).
- Key symptoms included stool per vagina (89%) and flatus per vagina (37%).
- Sigmoid resection with primary anastomosis achieved symptom resolution in 84% of patients.
Conclusions:
- A triad of symptoms (vaginal discharge/odor, previous hysterectomy, diverticulitis history) should raise suspicion.
- Diagnosis can be aided by speculum examination and contrast enema.
- Rectosigmoid resection and primary reanastomosis are effective, recommending multidisciplinary management.
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