What is the most common type of anorectal fistula?
Intersphincteric Fistulas: Inevitably, as most abscesses develop in the place between these sphincters, the most common type is an intersphincteric fistula. That is one that crosses the internal sphincter and then has a tract to the outside of the anus leading.
How many types of fistula surgery are there?
Fistulotomy is one of the most commonly used surgical procedures to treat fistulas.
What is a complex fistula?
A fistula-in-ano is termed “complex” when the track crosses > 30%-50% of the external sphincter (high-transsphincteric, suprasphincteric and extrasphincteric), is anterior in a female, is recurrent, has multiple tracks, or the patient has preexisting incontinence, local irradiation or Crohn’s disease[1-4].
What is the name of fistula?
A fistula (plural: fistulas or fistulae /-li, -laɪ/; from Latin fistula, “tube, pipe”) in anatomy is an abnormal connection between two hollow spaces (technically, two epithelialized surfaces), such as blood vessels, intestines, or other hollow organs. Types of fistula can be described by their location.
What is low type fistula?
low fistula the internal orifice of the fistula begins below puborectalis. the track passes through few or no sphincter muscle fibres and is relatively close to the skin. e.g. – superficial fistulas, low intersphincteric fistulas, and low trans-sphincteric fistulas.
What is a fistula surgery called?
Fistulotomy refers to when a surgeon cuts a fistula along its whole length so that it heals into a flat scar. During seton surgery, a surgeon will place a piece of thin surgical thread inside the fistula to help drain any infection and allow it to heal. Other treatment options include: endoscopic ablation.
What is the difference between fistulotomy and Fistulectomy?
A fistulectomy involves complete excision of the fistulous tract, thereby eliminating the risk of missing secondary tracts and providing complete tissue for histopathological examination. A fistulotomy lays open the fistulous tract, thus leaving smaller unepithelized wounds, which hastens the wound healing.
What is a horseshoe fistula?
Horseshoe fistulae is a complex type of trans-sphincteric fistula characterized by the presence of a curved posterior track at the level of the puborectalis muscle and a supralevator track that sometimes extends high up in the ischiorectal fossa above the level of the pelvic floor muscles [8].
What is complex perianal fistulas?
Definition of complex perianal fistulas (CPF): A fistula meeting any of the following criteria: High location (high intersphincteric, high transsphincteric, extrasphincteric, or suprasphincteric), multiple external openings, perianal abscess, anal stenosis, or proctitis.
What are the types of obstetric fistula?
Different types of obstetric fistula
- vesicovaginal fistula (VVF), between the bladder and vagina.
- urethrovaginal fistula (UVF), between the urethra (bladder outlet) and vagina.
- rectovaginal fistula (RVF), between the rectum and vagina.
- ureterovaginal fistula, between the ureters (kidney tubes) and the vagina.
What is low and high fistula?
RV fistulas are classified as “high” or “low”. Anovaginal fistulas are considered low fistulas and involve the sphincter mechanism. High fistulas are those that have their origin above the sphincter complex. The operative approach differs widely based on this anatomic classification.
What is the difference between fistulotomy and fistulectomy?
How fistulotomy is done?
During the fistulotomy, a cut will be made at the site of the fistula. The fistula is opened surgically to remove the infected area with pus or other fluids. In many cases, stitches are used during a fistulotomy. If stitches aren’t used, the wound would be left open and either packed or covered with gauze.