Fistula in Ano
An anal fistula is an abnormal tunnel between the anal canal and nearby skin, often following an abscess. Symptoms include recurring drainage, pain and swelling. Most fistulas need a procedure for lasting closure; the aim is to treat disease while protecting bowel control. An associated abscess may require prompt drainage before definitive treatment.
what are the causes of Fistula in Ano?
Fistula in ano can have various causes, including:
- Anal Abscess: An anal abscess is a localized infection that forms a collection of pus near the anus. If the abscess is not adequately treated or drained, it can lead to the formation of a fistula.
- Crohn’s disease can cause perianal fistulas and may require coordinated medical and surgical treatment.
- Trauma: Injury or trauma to the anal area, such as from childbirth, anal surgery, or injury during sexual activity, can result in the formation of a fistula.
- Cryptoglandular Infection: This is the most common cause of fistulas in ano. It occurs when the small glands in the anus become infected, leading to the development of an abscess and subsequent fistula formation.
- Radiation Therapy: In some cases, radiation therapy used to treat certain cancers in the pelvic area can cause damage to the tissues, leading to the development of fistulas.
Tarnaka address: H.No 12-5-30, White House, Moula Ali Road, South Lalaguda, Tarnaka, Secunderabad, Telangana 500017. Bring previous MRI images/reports, operation notes, seton details, medicines and allergies. Mention Crohn’s disease, prior anal operations and any difficulty controlling wind or stool.
what are the Symptoms of Fistula in Ano?
Symptoms of fistula in ano may vary depending on the location, complexity, and extent of the fistula. Common symptoms include:
- Persistent or recurring pain around the anus or rectum.
- Drainage of pus or fluid from an opening near the anus.
- Itching or irritation around the anus.
- Swelling or a lump near the anus.
- Redness or inflammation around the anal area.
- Discomfort or pain during bowel movements.
- Bleeding, especially if the fistula becomes infected or irritated.
- Fever or chills, which may occur if there is an accompanying infection.
Severe or increasing anal pain with fever, rapidly enlarging swelling or feeling unwell may indicate an abscess. Seek urgent medical assessment rather than waiting for a routine appointment. Do not squeeze, probe or try to drain the area yourself.
what are the Investigations of Fistula in Ano?
Assessment begins with medical history and examination. MRI or endoanal ultrasound may be selected for complex, recurrent or unclear disease; not every patient needs every test. An examination under anesthesia may be required to map the tract.
- A clinician inspects the area for openings, drainage, tenderness and abscess. Do not probe a tract yourself.
- Digital Rectal Examination (DRE): A DRE involves the insertion of a gloved, lubricated finger into the rectum to assess for any abnormalities, such as the presence of abscesses or other conditions that may be associated with the fistula.
- Imaging Studies: Imaging techniques like ultrasound, magnetic resonance imaging (MRI), or computed tomography (CT) scans may be used to obtain detailed images of the fistula tract and surrounding structures. These studies help in determining the course, depth, and complexity of the fistula.
- Fistulography: Fistulography involves injecting a contrast material into the fistula tract to better visualize its path and branches. This procedure can help in identifying hidden tracts or complex fistulas.
- Anoscopy or Proctoscopy: Anoscopy or proctoscopy may be performed to examine the anal canal and lower rectum using a specialized instrument. This allows for a closer inspection of the area to identify any associated conditions or abnormalities.
Ask where any required scan or procedure will be performed and whether referral is needed. The tract’s relationship to the sphincter, rather than the skin opening alone, guides the treatment plan.
what are the treatment options for Fistula in Ano?
The treatment options for fistula in ano may vary depending on the complexity, location, and individual patient factors. Here are some common treatment options:
- Fistulotomy: This is a surgical procedure in which the fistula tract is cut open and laid open to heal from the inside out. It is typically performed for simple or superficial fistulas.
- A loose seton maintains drainage and may be part of staged treatment; it does not necessarily cure the fistula. Cutting setons have different risks. Do not tighten or remove one yourself.
- Advancement Flap: This surgical technique involves the creation of a flap of healthy tissue near the fistula opening, which is then rotated and used to cover the internal opening of the fistula. This procedure is typically used for higher or more complex fistulas.
- LIFT closes and divides the tract in the plane between sphincter muscles and may suit selected transsphincteric fistulas. It does not work by cutting off the tract’s blood supply.
- Fibrin glue seals the tract in selected cases, but healing may be less reliable and recurrence is possible.
- A plug may be considered in selected cases; suitability and healing are variable.
Discuss recurrence, infection, bleeding, repeat or staged treatment and temporary or lasting loss of bowel control. Ask for the actual procedure location, follow-up plan and a written estimate covering scans, anesthesia, procedure, seton materials, medicines, dressings, stay and reviews. Confirm charges for later stages and insurer approval separately.
Fistula in Ano
Can a fistula in ano heal on its own without treatment?
Most anal fistulas do not close permanently without treatment. Drainage from an abscess may settle while an underlying tract remains. Recurrent drainage, swelling or pain requires assessment; do not assume that a temporarily closed skin opening means the fistula has healed.
Will the treatment of a fistula in ano be painful?
The treatment of a fistula in ano may involve some discomfort or pain, especially immediately after surgery. However, healthcare professionals typically provide pain management options to minimize discomfort. Pain medication, sitz baths, and maintaining good hygiene are commonly recommended to alleviate post-operative pain and promote healing.
Can a fistula in ano come back after treatment?
Recurrence of a fistula in ano is possible, although the likelihood varies depending on the specific characteristics of the fistula and the chosen treatment method. Factors such as the complexity of the fistula, presence of underlying conditions like Crohn's disease, and surgical technique used can influence the risk of recurrence. It is important to follow post-operative care instructions, attend regular follow-up appointments, and promptly report any new or concerning symptoms to the healthcare provider for proper management.
Still Have a Question?
For non-urgent appointments, call Tarnaka below or use the enquiry form. Do not wait for a callback for urgent symptoms. See our anal fistula overview and NHS treatment guidance. This page does not replace an examination or confirm immediate service availability.
+91 9100001201