CHAPTER II
Fistula ANI
I. DEFINITION
Fistula ani also called perianal fistula or fistula para-anal1. Anorectal Fistula (Fistula ani) is an abnormal communication between the anus and perianal skin. Glands in the canal lies in linea dentate ani provides a pathway for the infecting organism can achieve intramuscular2 space.
II. Etiology
Fistulas can occur spontaneously or secondary to perianal abscess (or perirektal). In fact, after drainage of the abscess periani, nearly 50% are likely to develop into a chronic fistula. Other fistulas may occur secondary to trauma, Crohn's disease. ani fissures, carcinoma, radiation therapy, aktinomikosis, tuberculosis, and infections klamidia2.
Kriptoglandular hypothesis states that an infection begins in the gland ani and evolve into the muscular wall of the anal sphincter causing anorectal abscess. After surgical or spontaneous drainage periani on the skin, usually of the granulation tissue tract behind, causing symptoms berulang2.
Can be caused by perforation or abscess penyaliran anorektum. Sometimes fistula caused by colitis with proctitis, such as tuberculosis, amubiasis, or morbus Crohn. Infection of the anal glands intersphincter in organisms found in the gastrointestinal tract-either aerobic (Cth: E. coli) and anaerobes (Cth: Bacteroides spp.) - Is a common disorder that causes ini.1