Laser vs. chemical: which treatment works best for painful tailbone cysts?
NCT ID NCT07420452
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two minimally invasive treatments—Silac (laser) and phenol (chemical)—for pilonidal sinus disease, a painful condition that affects young adults. About 200 patients with primary (first-time) disease will be randomly assigned to one treatment and followed for 6 months. The goal is to see which method has fewer recurrences, less pain, and faster recovery.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Feb 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a government body.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 64 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age between 18 and 64 years * Diagnosis of primary pilonidal sinus disease * Maximum of three sinus openings (pits) * History of no more than two previous abscess episodes * Ability to provide written informed consent Exclusion Criteria: * Recurrent or previously operated pilonidal sinus disease * More than three sinus openings * More than two previous abscess episodes * Acute abscess requiring emergency drainage at presentation * Presence of significant uncontrolled comorbidities * Pregnancy * Inability to comply with follow-up
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Izmir City Hospital
Izmir, İzmir, 35540, Turkey (Türkiye)
More trials for these conditions
Other studies related to the condition(s) this trial covers.