Etiological conditions anal fistula

Cryptoglandular origin not specified:

  • Inflammatory
  • Crohn's disease
  • Ulcerative colitis - infectious
  • Tuberculosis
  • Venous lymphogranuloma
  • Actinomicosis

Pelvic inflammations:

  • Diverticulitis
  • Appendicitis
  • Carcinoma
  • Radiation

Trauma:

  • Impalement

Foreign bodies:

  • For enemas
  • For sexual practices

Post-surgical:

  • Prostate surgery
  • Episiotomy
  • Hemorroidectomía

Inmunosupresion:

  • AIDS
  • Leukaemia
  • Chemotherapy
  • Lymphoma
  • Iatrogenic (kidney transplantation)