Abstract
Fistula in ano is a common condition mostly caused by inflammation of the proctodeal anal glands. This results in an acute anal abscess or chronic fistula. Anal fistulas are classified according to their relation to the anal sphincter muscles: subcutaneous, subanodermal, intersphincteric, transsphincteric, suprasphincteric or extrasphincteric. Distal fistulas including negligible amounts of sphincter muscle are treated by a lay-open technique (fistulotomy, fistulectomy), whereas proximal fistulas are cured using sphincter-saving procedures (advancement flap, fistulectomy with primary sphincter reconstruction, ligation of intersphincteric fistula tract, fistula plugs, fistula clip). The best surgical method balances the chance of healing and the risk of incontinence. An experienced colorectal surgeon also plays an important role.
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Herold, A. (2017). Anorectal Abscess and Fistula. In: Herold, A., Lehur, PA., Matzel, K., O'Connell, P. (eds) Coloproctology. European Manual of Medicine. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-53210-2_6
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DOI: https://doi.org/10.1007/978-3-662-53210-2_6
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