Background: Magnetic resonance imaging MRI is highly accurate for the depiction of both the primary tract of fistula and abscesses, in patients with perianal disease. In addition, MRI can be used to evaluate the activity of fistulas, which is a significant factor for determining the therapeutic strategy. Objectives: This study aimed to determine the usefulness of diffusion-weighted DW MRI for assessing activity and visibility of perianal fistula. Patients and Methods: Fifty-three patients with 56 perianal fistulas were included in the current retrospective study. Fistulas were classified into two groups: only perianal fistulas and fistulas accompanied by abscess. Fistulas were also classified into two groups, based on clinical findings: positive inflammatory activity PIA and negative inflammatory activity NIA.
Anal fistula repair
Anal Fistula (Child)
What is a perianal fistula? A perianal fistula, almost always the result of a previous abscess, is a small passage connecting the anal gland from which the abscess arose to the skin where the abscess was drained. What is a perianal abscess? A perianal abscess is an infection in a mucous-secreting gland in the anal canal around your anus. What causes an abscess?
An anal fistula is an abnormal connection between the anus and the skin. On the surface of the skin around the anus, one or more 'holes' might be evident: these are the external openings of thin passages that tunnel down towards the anal canal. An anal fistula is usually the result of a previous abscess in the area, which has been drained of pus but does not fully heal. This results in persistent or intermittent discharge of pus, blood or mucus.
Anal Fistulas are tracks that develop, frequently as the result of an infection, in the layers of the muscle or in fatty layers of tissue involving the area of the anus. Anal Fistulas may increase in size, track through long areas of tissue, forge an outlet and opening into the perineum the area between the anus and the urinary opening , and become infected. They can be very painful and require draining and a process of closure over a period of time. Surgery for Anal Fistulas may involve draining any infection.