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Anal fistula is a common condition with a wide variety of clinical presentations, which can make evaluation and treatment challenging and surgical outcomes uncertain. This study was undertaken to identify lessons learned in the surgical treatment of 483 patients over a 20- year period leading to a pragmatic approach to treatment of this condition.
The wide array of variations of anal fistulas makes them challenging both to classify and to treat. The aim of the study is to determine if a systematic approach to their evaluation and surgical treatment, regardless of how one wishes to classify them, can be based on careful assessment of sphincter length and of the anatomical and etiological characteristics of the fistula.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| persons with anal fistulas | all persons with anal fistulas treated by a single surgeon over 22 years |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| surgical procedures commonly done for anal fistula | Procedure | Surgical procedures performed, including fistulotomy; fistulotomy with sphincter repair; seton; advancement flap; fistula plug; |
| Measure | Description | Time Frame |
|---|---|---|
| Number of patients who heal after simple or staged operations for fistula | typically 1 year, but up to 4 years |
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Inclusion Criteria:
Exclusion Criteria:
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all persons with anal fistulas treated by a single surgeon at the University of Michigan Hospital from January 1996 through December 2018
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| Name | Affiliation | Role |
|---|---|---|
| Richard E Burney, MD | University of Michigan | Principal Investigator |
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| ID | Term |
|---|---|
| D012003 | Rectal Fistula |
| ID | Term |
|---|---|
| D007412 | Intestinal Fistula |
| D016154 | Digestive System Fistula |
| D004066 | Digestive System Diseases |
| D007410 | Intestinal Diseases |
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| D005767 | Gastrointestinal Diseases |
| D012002 | Rectal Diseases |
| D005402 | Fistula |
| D020763 | Pathological Conditions, Anatomical |
| D013568 | Pathological Conditions, Signs and Symptoms |