Laser Anal Fistula Treatment (FiLaC)

An anal fistula is a small tunnel between the inside of the anal canal and the skin near the anus, usually left behind by an abscess. Laser fistula closure (FiLaC) passes a thin fibre along the tunnel and uses radial laser energy to destroy its lining so that the track collapses and seals, without cutting the sphincter muscle.

Its main advantage is that continence is protected and recovery is quick. Its main limit is a lower healing rate than traditional cutting operations: roughly 50 to 70 percent heal after a first treatment, and repeat procedures are common.

What Laser Anal Fistula Treatment (FiLaC) involves

The track is mapped first with pelvic MRI or endoanal ultrasound, because side branches and hidden abscesses are the usual reason treatments fail. If there is active infection, a loose seton, a soft thread through the track, is placed for 6 to 12 weeks to drain it and let the tunnel mature. At the laser procedure you are in the lithotomy or prone position. The surgeon finds the internal opening, cleans the track with a small brush or curette and rinses it. A radial-emitting 1470 nanometre diode laser fibre is passed through the full length and withdrawn at about 1 millimetre per second while firing, which shrinks the tunnel around it. The internal opening is then closed with a stitch or a small advancement flap of rectal lining, which improves success. The external opening is left open to drain.

Who is a good candidate for Laser Anal Fistula Treatment (FiLaC)?

The method is aimed at fistulas where cutting the muscle would risk incontinence.

• Trans-sphincteric fistulas crossing a significant part of the sphincter
• A single, fairly straight track without undrained abscess, ideally after a seton
• Women with previous childbirth injury, and anyone with already reduced continence
• Recurrent fistula after earlier surgery
• Selected Crohn's fistulas when the disease is controlled with medication

It is usually not the right choice if:

• Simple low fistulas, for which laying the track open (fistulotomy) heals over 90 percent with little continence risk
• Acute abscess, which must be drained first
• Branching or horseshoe tracks, very wide or very short tracks
• Active rectal Crohn's inflammation
• Fistulas caused by cancer, radiotherapy or tuberculosis until the cause is addressed

Technique options

• FiLaC laser closure: Sphincter-saving; repeatable if it fails.
• Fistulotomy: Low fistulas; highest healing rate.
• LIFT (ligation of the intersphincteric tract): Sphincter-saving surgical alternative with similar success.
• Advancement flap: Covers the internal opening; often combined with laser.
• Seton drainage: Preparation stage, or long-term control in Crohn's disease.
• VAAFT, plugs and glue: Other sphincter-preserving options with variable results.

What happens during your treatment

The procedure takes 20 to 40 minutes under spinal or general anaesthesia as a day case. Pain afterwards is usually mild compared with cutting operations. Expect a small amount of blood-stained discharge from the outer opening, for which you wear a pad.

Preparing for your trip

Plan for 4 to 6 days in Istanbul. Your surgeon reviews photographs and your medical history before you book, and you meet in person the day before surgery for examination, marking and consent with a professional interpreter.

• Stop smoking and nicotine at least four weeks before and after surgery; it is the single biggest avoidable cause of wound problems
• Tell the team about every medicine and supplement you take; blood thinners, some herbal products and hormone treatment may need to be paused on your doctor's advice
• Arrange for someone to travel with you or to be reachable, and keep the first days at home free of work and lifting
• Book a changeable return flight; your surgeon confirms when you are fit to fly

Recovery and results

Most people are back at desk work in 2 to 5 days. Take sitz baths or shower the area after bowel movements, keep stools soft with fibre and fluids, and avoid cycling and heavy straining for 2 weeks. Discharge tapers over 2 to 6 weeks. Healing is judged at around 3 months: a dry, closed outer opening with no pain. If discharge persists or returns, MRI is repeated and a second laser session or a different operation is planned.

• Back to everyday activity: 2 to 5 days
• When results show: Healing judged at 3 months
• How long they last: Permanent once healed; recurrence possible

Safety, risks and revision policy

The risks are low; the real issue is failure to heal.

• Persistent or recurrent fistula in roughly a third to a half
• Abscess if the outer opening closes before the track has healed
• Pain or minor bleeding for some days
• Minor change in continence, uncommon, mostly after combined flap procedures
• Thermal injury to the sphincter if too much energy is used, rare
• Need for a staged approach with several anaesthetics

Every written proposal arranged through Clinic-Y states what the clinic covers if a correction is needed. Ask for it before you book, not after.

Cost of Laser Anal Fistula Treatment (FiLaC) in Türkiye

Clinic-Y does not publish a single price for Laser Anal Fistula Treatment (FiLaC), because the honest figure depends on your case. What moves it:

• Disposable laser fibre
• MRI or endoanal ultrasound mapping
• Whether a seton stage or flap closure is needed
• Anaesthesia and day surgery fees
• Possible repeat session

Send your photographs or reports and you receive written, all-inclusive proposals from suitable teams, side by side. Reviewing your case is free.

Frequently Asked Questions