First inspect the non-infected healed fistula with its previously inserted seton. Probe the fistula through its external opening and perform a digital rectal examination. Now insert the Parks retractor.
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Exploring and inspecting the fistula
![Exploring and inspecting the fistula]()
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Excising the external opening of the fistula
In order to ensure a wide external wound for drainage, generously excise the external opening of th
In order to ensure a wide external wound for drainage, generously excise the external opening of th
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