Dealing with an anal fistula can be both physically distressing and emotionally draining. If you have been experiencing persistent discharge, pain, or recurrent abscesses, you are not alone. In Singapore, anal fistula is commonly treated by colorectal surgeons and general surgeons with subspecialty experience in colorectal conditions.
Understanding your treatment options is the first step towards effective management and improved quality of life.
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What is an Anal Fistula?
An anal fistula is an abnormal tunnel that forms between the end of the bowel and the skin near the anus. It usually develops following an anal abscess that has not healed completely.
Because fistulas rarely heal on their own, surgical or procedural treatment is often required to close the tract and prevent recurrence or ongoing infection.
Types of Fistula Treatment in Singapore
There is no single standard treatment for anal fistulas. Management depends on the fistula’s location, complexity, and involvement of the anal sphincter muscles. Treatment is tailored by a colorectal specialist based on clinical assessment and imaging such as MRI when needed.
1. Fistulotomy
Fistulotomy is commonly performed for simple, low anal fistulas that do not significantly involve the sphincter muscles.
The procedure involves surgically opening the fistula tract so it heals from the inside out as a flat scar.
It is generally effective for uncomplicated cases and may be performed as a day surgery in suitable patients.
2. Seton Placement
A seton is a thin surgical thread placed through the fistula tract to allow continuous drainage.
It is typically used in complex or high fistulas involving the sphincter muscles, where immediate cutting surgery would carry a higher risk to bowel control.
Setons may be used:
- to control infection and drainage
- as part of a staged surgical approach
- prior to definitive surgery
3. LIFT Procedure (Ligation of Intersphincteric Fistula Tract)
The LIFT procedure is a sphincter-preserving surgical technique used in selected complex fistulas.
It involves accessing the fistula tract in the space between the sphincter muscles and closing it securely without dividing the muscle.
This approach aims to treat the fistula while preserving continence.
4. Advancement Flap Surgery
This is a reconstructive procedure often used for complex or recurrent fistulas, particularly after previous treatment failure.
It involves closing the internal opening of the fistula and covering it with healthy tissue (a flap) to promote healing.
5. Biologic or Sealant-Based Treatments (Fibrin Glue / Fistula Plug)
These are non-cutting, sphincter-preserving options used in selected cases.
- Fibrin glue is injected into the tract to seal it
- A biologic plug is inserted to block the fistula opening
These approaches are less invasive but generally have lower success rates compared to surgical options. They may be suitable for carefully selected patients.
Minimally Invasive Approaches for Anal Fistula Treatment
VAAFT and FiLaC are minimally invasive techniques designed to treat the fistula tract while preserving surrounding tissue and sphincter function.
- VAAFT uses a small endoscopic camera to visualise and treat the tract from within.
- FiLaC uses laser energy delivered via fibre optics to ablate and close the fistula tract.
These techniques may be suitable for selected cases, depending on fistula complexity and anatomy. In some situations, adjunct procedures such as seton placement may be used prior to definitive treatment.
Understanding the Costs of Surgery
The cost of anal fistula surgery in Singapore varies depending on:
- Complexity of the fistula
- Type of procedure performed
- Hospital setting (public or private)
- Length of hospital stay
Learn more abou costs in our article: Anal Fistula Surgery Cost in Singapore: What to Expect at Private Hospitals
Most Singapore Citizens and Permanent Residents can use MediSave to offset part of the cost, subject to prevailing withdrawal limits set by the Ministry of Health (MOH). Patients with Integrated Shield Plans may also receive additional coverage depending on their policy terms.
Specialists You May Consider
Choosing a colorectal surgeon experienced in fistula management is important for optimal outcomes. Treatment is highly individualised and often guided by clinical examination and imaging findings. Some colorectal surgeons you may consider:
Dr Chong Choon Seng 张峻诚医生
[SG] Featured Doctor
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For inquiries or for an introduction to a specialist, contact us below.
Recovery and Aftercare
Most patients are able to return home on the same day or after a short hospital stay.
Post-operative care may include:
- sitz baths (warm water bathing of the area)
- pain management medication
- maintaining a high-fibre diet to ease bowel movements
- wound care and follow-up reviews
Healing time varies depending on the complexity of the fistula and the procedure performed, but full recovery may take several weeks.
Frequently Asked Questions (FAQs)
1. Is anal fistula surgery painful?
The procedure is performed under anaesthesia, so there is no pain during surgery. Post-operative discomfort is usually mild to moderate and can be managed with medication.
2. How long is the recovery period?
Most patients resume light activities within one to two weeks. Complete healing may take six weeks or longer depending on the procedure and fistula complexity.
3. Can an anal fistula come back after surgery?
There is a risk of recurrence, particularly in complex cases. This risk is reduced with appropriate surgical selection and adherence to post-operative care instructions.
4. Is anal fistula surgery covered by MediSave?
Yes. Anal fistula surgery is MediSave-claimable in Singapore, subject to MOH limits and the specific procedure performed.
5. Are there non-surgical treatments?
Non-surgical options such as antibiotics may treat infection but do not close the fistula tract. Definitive treatment usually requires a procedural or surgical approach.