Evaluation of the Healing of the Pilonidal Cyst After 1940 nm Laser Treatment (PILOLAS 1940)

November 25, 2025 updated by: GCS Ramsay Santé pour l'Enseignement et la Recherche
The aim of this study is to evaluate the extent to which the reduction of energy absorption that laser 1940 nm allows could improve the outcomes and postoperative results of the treatment of pilonidal cysts.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

30

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Lyon, France, 69009
        • Recruiting
        • Clinique de la Sauvegarde
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

patients treated with laser 1940 nm for a pilonidal cyst.

Description

Inclusion Criteria:

  • Patients who did not object to the collection of their data
  • Patients who underwent surgery for a pilonidal cyst using 1940 nm laser treatment

Exclusion Criteria:

  • Patients with a history of pilonidal cyst surgery

    • Patients who underwent emergency surgery for an abscess
    • Patients already included in another therapeutic study protocol

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
LASER 1940
Patient who underwent surgery for a pilonidal cyst using 1940 nm laser treatment
Procedure: pilonidal cyst laser surgery
pilonidal cyst using 1940 nm laser treatment

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
HEALING
Time Frame: 1 Month
The main objective is to evaluate the healing rate of the pilonidal sinus one month after treatment with Er-YAG laser 1940 nm. Wound healing at one month, defined by the absence of a dressing, is the main evaluation criterion.
1 Month

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Recidivism
Time Frame: 6 Month
Recidivism is defined by: - The presence of persistent troubling symptoms 6 months after the surgery: suppuration, recurrent wound dehiscence, lack of healing despite care deemed optimal by the expert, reactivation/recurrence of abscesses. - The presence of a characteristic image on MRI if this examination has been carried out: subcutaneous collection, in hyper T2.
6 Month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

GCS Ramsay Santé pour l'Enseignement et la Recherche

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 3, 2025

Primary Completion (Estimated)

June 30, 2026

Study Completion (Estimated)

June 30, 2026

Study Registration Dates

First Submitted

November 25, 2025

First Submitted That Met QC Criteria

November 25, 2025

First Posted (Actual)

December 8, 2025

Study Record Updates

Last Update Posted (Actual)

December 8, 2025

Last Update Submitted That Met QC Criteria

November 25, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2024-06-045-P-ERAMD0619

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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