A number of conditions may be associated with the development of an anal fistula.
Infections:
(1) pelvic tuberculosis
(2) perianal actinomycosis
(3) lymphogranuloma venereum (LGV)
(4) HIV infection
(5) amebiasis
Inflammatory conditions:
(1) Crohn’s disease
(2) pilonidal disease
(3) hidradenitis suppurativa
(4) “bridging” of an anal fissure
Traumatic disorders:
(1) anorectal trauma
(2) anorectal surgery
(3) obstetrical injury
(4) anorectal foreign body
Other:
(1) radiation therapy
(2) presacral dermoid cyst
(3) sacrococcygeal teratoma
(4) rectal duplication
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Specialty: Gastroenterology
ICD-10: ,
