Anorectal Abscess

Most common causative organism is E. coli (60%). Others are Staphylococcus, Bacteroides, Streptococcus, B. proteus. Commonly occurs due to infection of anal gland in perianal region. 95% of anorectal abscesses are due to infection of anal glands in relation to crypts Cryptoglandular disease. Common in diabetics and immunosuppressed.

Anorectal Abscess

Classification

  • Perianal
  • Ischiorectal
  • Submucous
  • Pelvirectal
  • Fissure abscess (in relation to fissure-in-ano).

Perianal Abscess

Subcutaneous collection Ischiorectal Abscess.
Lies between skin and levator Ani Submucosal Abscess. lies above dentate line Pelvirectal abscess – above levator ani muscle and pelvic peritoneum

Treatment

  • Antibiotics.
  • Drainage under General.
  • Anaesthesia

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