Several fistula openings are visible in the anal fold. Probing reveals a fistula tract extending close to the posterior anal margin. The fistula tracts are marked with a color indicator (toluidine blue-milk) to achieve complete excision, including accessory tracts.
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Depiction of Fistula Tracts
![Depiction of Fistula Tracts]()
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En bloc Excision
Oval complete excision of all chronically infected tissue. All blue-marked tissue must be safely re
Oval complete excision of all chronically infected tissue. All blue-marked tissue must be safely re
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