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fistulotomy

Surgical treatment, that involves cutting along the whole length of an anal fistula to open it up, so it heals as a flat scar. It is the most effective treatment for the most common type that does not pass through much of the sphincter muscles. Because damaging them can potentially lead to bowel incontinence. Anal fistula (fistula-in-ano) is a tunnel that develops between the inside of the anus and the outside skin around the anus. Most of them are caused by an infection that starts in an anal gland. The infection causes an abscess that drains on its own or is drained surgically through the skin next to the anus. This drainage tunnel remains open and connects the infected anal gland or the anal canal to a hole in the outside skin around the anus. Anal glands (anal sacs) are small glands near the anus in many mammals. They are situated in between the external anal sphincter muscle and internal anal sphincter muscle. In humans, they secrete mucin.