Translations:Anal fistula/2/en

Anatomy of the anus and rectum.

Different types of anal fistulas.

• Inflammatory tract originating from infected anal gland connecting anal canal with skin
  • May be intersphincteric, suprasphincteric, transsphincteric, or extrasphincteric
• Goodsall's Rule
  • Draw imaginary line horizontally through the anal canal
    • If external opening is anterior to this line fistula runs directly into the canal
    • If external opening is posterior to this line fistula curves to post midline of canal