Thelansis

  An anal fistula typically develops when the anal glands located in the intersphincteric plane become blocked and infected, forming a cryptoglandular abscess. In some cases, even after drainage, up to 40% of perirectal abscesses can progress to fistulas, with spontaneously drained abscesses having a higher rate of fistula formation, reaching up to 66%. An acute or chronic anal fistula can be distressing for patients and significantly impact their quality of life. These fistulas are commonly categorized based on their anatomical positions. Classification of Anorectal Fistulas includes: Transphincteric fistula High intersphincteric fistula Suprasphincteric fistula Extrasphincteric fistula Multiple factors contribute to the development of fistulas. The mnemonic "FRIEND" serves as a memory aid: "F" for foreign body, "R" for radiation, "I" for infection or Inflammatory Bowel Disease, "E" for epithelialization, "N" for neopla