The word fistula refers to the relationship between two or more surfaces or holes in the body. Anal or perianal fistula is a connection between the inside of the anus and the skin around the anus. That can be a simple, short-lived relationship, or a deep, complex relationship and a lot of detours. Dr. Hossein Yousef fam has been given a detailed explanation of the cause of perianal or anal fistula and its treatment.

Since the day known as perianal fistula disease, surgeons have been trying to treat the disease without damaging the anal sphincters that control the stool. However, the nature of the disease and its spread to the anatomical areas around the anus, which is not easy to identify, have caused recurrence of the disease and in most cases led surgeons to treat fistula using more sphincter discontinuation methods. Considering the value of anal sphincter muscle in the control of excretion, it seems that, if possible, prior to the decision to have a fistulectomy, all the procedures in which the sphincter is preserved should be used.