SiLaC Laser Treatment for Pilonidal Disease in Seattle

What Is SiLaC?

SiLaC stands for Sinus Laser-Assisted Closure.

Pilonidal disease usually begins when hair, debris, and inflammation create small openings or “pits” in the cleft between the buttocks. Beneath the skin, these openings can connect to one or more sinus tracts.

Traditional surgery may remove the entire affected area.

SiLaC takes a different approach.

After the sinus tract is cleaned and hair and inflammatory debris are removed, a thin laser fiber is inserted through the tract. Laser energy is delivered circumferentially as the fiber is slowly withdrawn.

The laser treats the inner lining of the sinus while causing the tract to contract and close gradually as it heals.

Because the procedure is performed through very small openings, there is usually far less disruption of normal tissue than with a traditional wide excision.

How Is SiLaC Performed?

The exact procedure is customized to the pattern of your pilonidal disease.

Typically, Dr. Kratz will:

1. Identify the pilonidal pits and sinus tracts
The openings and extent of the disease are carefully evaluated.

2. Clean the sinus
Hair, debris, and inflamed tissue are removed from inside the tract.

3. Treat the tract with the laser
A specialized radial laser fiber is passed through the sinus tract.

Laser energy is delivered to the inside of the tract as the fiber is gradually withdrawn.

4. Allow the small openings to heal
There is generally no large incision to close.

The small access points allow drainage while the treated sinus heals from the inside.

What Are the Advantages of SiLaC?

For the right patient, the biggest advantage of SiLaC is simple:

Treat the disease while preserving as much normal tissue as possible.
Traditional pilonidal surgery can sometimes require a substantial incision or removal of a significant amount of tissue.

SiLaC may avoid that.

Potential advantages include:

Smaller wounds

The procedure is performed through the existing pits or very small openings.

Less postoperative discomfort

Because significantly less tissue is removed, many patients experience less pain than after traditional excisional surgery.

Faster recovery

Many patients are able to resume normal daily activity within several days.

Less wound care

There is generally no large open cavity requiring weeks of packing and dressing changes.

Better cosmetic result

Because there is no large excision, scarring is typically minimal.

Repeatable if necessary

If a portion of the sinus persists or recurs, selected patients may undergo another minimally invasive treatment rather than automatically requiring a large operation.

Who Is a Good Candidate for SiLaC?

SiLaC can be particularly attractive for patients with:

Primary pilonidal disease
One or several midline pits
A defined pilonidal sinus tract
Intermittent drainage
Recurrent swelling or inflammation
Previous pilonidal abscesses
Pilonidal disease that has not yet required major surgery
A desire to minimize downtime and scarring
However, not every pilonidal cyst should be treated with a laser.

More extensive disease, complicated branching tracts, significant lateral disease, active abscesses, or some recurrent cases may require a different approach.

That distinction is important.

SiLaC Is Not the Right Operation for Everyone

There is no single procedure that is best for every patient with pilonidal disease.

One of the problems with treating pilonidal disease is trying to force every patient into the same operation.

Dr. Kratz offers multiple approaches.

Depending on your anatomy, treatment may include:

SiLaC laser treatment
Minimally invasive pit treatment
Drainage of an acute pilonidal abscess
Limited excision
Bascom-type procedures
Off-midline reconstruction for more extensive disease
The goal is not simply to perform the newest procedure.

The goal is to perform the least invasive procedure that has a reasonable likelihood of solving your particular problem.

Is SiLaC Effective?

Published studies of laser treatment for pilonidal disease have shown encouraging healing rates with relatively low postoperative morbidity.

However, SiLaC is not a guarantee that pilonidal disease will never return.

Recurrence rates vary among studies and appear to depend on several factors, including:

Extent of the pilonidal disease
Number of openings
Previous pilonidal surgery
Anatomy of the natal cleft
Infection
Weight and body habitus
Length of follow-up
Some patients may require a second treatment.

This is why patient selection matters as much as the laser itself.

At Precision Proctology, SiLaC is one treatment option within a comprehensive pilonidal surgery program—not the only operation offered.

Can SiLaC Treat an Active Pilonidal Abscess?

An acute painful pilonidal abscess often needs to be drained first.

If you have:

Rapidly increasing pain
A tender lump
Redness
Swelling
Pus or drainage
Fever
you should be evaluated promptly.

Once the acute infection is controlled, Dr. Kratz can determine whether additional treatment such as SiLaC is appropriate to address the underlying pilonidal disease.

Same-day evaluation available for painful pilonidal abscesses.

Pilonidal Disease Shouldn't Control Your Life

Many patients live with repeated cycles of:

pain → swelling → drainage → improvement → recurrence.

Others have been told to simply wait until the problem becomes bad enough for major surgery.

There may be another option.

If you have a persistent or recurrent pilonidal cyst or pilonidal sinus, Dr. Kratz can evaluate whether SiLaC laser treatment or another minimally invasive approach is appropriate.

Get an answer and a treatment plan.

Frequently Asked Questions About SiLaC

What does SiLaC stand for?
SiLaC stands for Sinus Laser-Assisted Closure. It is a minimally invasive laser technique used to treat selected pilonidal sinus tracts.

Is SiLaC the same as removing a pilonidal cyst?
No. Traditional surgery generally removes affected tissue. SiLaC treats the sinus tract internally using a laser while preserving most of the surrounding tissue.

Is SiLaC painful?
Most patients experience some postoperative soreness, but because the procedure involves substantially less tissue disruption than wide excision, postoperative discomfort may be less.

How quickly can I return to work?
Many patients return to normal daily activity within several days, although this depends on the extent of disease, the type of work you perform, and your individual recovery.

Will I need wound packing?
Usually there is no large open wound requiring the type of prolonged packing associated with traditional wide excision. Specific wound care depends on the procedure performed.

Can pilonidal disease come back after SiLaC?
Yes. Recurrence is possible after every pilonidal procedure, including SiLaC. Some patients may benefit from repeat minimally invasive treatment, while others may eventually need a different operation.

Can SiLaC be repeated?
In selected cases, yes. Published experience includes patients successfully treated with additional SiLaC procedures when the first treatment did not completely resolve the disease.

Can SiLaC treat recurrent pilonidal disease?
Sometimes. Previous surgery does not automatically rule out SiLaC, but recurrent disease tends to be more complex and requires individualized evaluation.

Do you offer other pilonidal operations?
Yes. Precision Proctology offers treatment ranging from abscess drainage and minimally invasive procedures to Bascom-type and off-midline surgical approaches.

How do I know which operation I need?
An examination is usually the best way to determine the extent of the disease and which treatment is most appropriate.