What is the prevalence of anal fistulas due to anorectal abscess?

Updated: Nov 09, 2018
  • Author: Bruce M Lo, MD, MBA, CPE, RDMS, FACEP, FAAEM, FACHE; Chief Editor: Barry E Brenner, MD, PhD, FACEP  more...
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Anal fistulas are a complication of anorectal abscesses, which are more common in women than in men. For reasons of intrinsic anatomy, rectovaginal fistulas are found only in women. Approximately 30-50% of patients with an anorectal abscess form an anal fistula. [10] and approximately 80% of anal fistulas arise from anorectal infection. [11]

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