Pilonidal SinusNCT04423510
Nonoperative Treatment of Recurrent Pilonidal Sinus Disease
An observational study of Pilonidal Sinus, run by Osman DOĞRU.
Trial summary
Postoperative recurrent pilonidal sinus disease is troublesome and its treatment is challenge. Many treatment modalities have been advocated in the treatment of recurrent pilonidal sinus disease; however, there is still no consensus in the literature. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Pilonidal Sinus
- What is being tested?
- Crystallized phenol treatment
- Type of treatment
- Surgery or procedure
- How many people
- 227 participants
- Where
- No sites listed yet
- Study dates
- 1 Mar 1995to 1 Feb 2016
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: The patients who previous operated recurrent pilonidal sinus disease and who accepted crystallized phenol treatment were included in the study. Patients who at least one year of treatment and contacting later were included in our study.
Who may be able to join
- Previous operated recurrent pilonidal sinus disease
- Follow-up period of more than 12 months
- The patients who connection by e-mail or telephone
Who cannot join
- Primer pilonidal sinus disease
- Follow-up period of less than 12 months
- The patients who can't connection by e-mail or telephone
About this study
Official title: Previously Operated Recurrent Pilonidal Sinus Treated With Crystallized Phenol: Twenty Years Experience
Postoperative recurrent pilonidal sinus disease is troublesome and its treatment is challenge. Many treatment modalities have been advocated in the treatment of recurrent pilonidal sinus disease; however, there is still no consensus in the literature. Some minimally invasive techniques are used alone or as an adjunct to surgery. Crystallized phenol is the most popular method in the nonoperative treatment of primer pilonidal sinus disease. But its long term effect in the postoperative recurrent cases is unclear. Investigators aimed to present the long-term efficacy of crystallized phenol treatment on postoperative recurrent pilonidal sinus disease through our results collected within the last 20 years.
Read the detailed description
Study data were collected prospectively and analyzed retrospectively. The demographic data of the patients, other parameters such as smoking, whether they sit a lot due to occupation (sitting at work for at least 6 hours a day), skin tone (whiter, darker), presence of positive family history, BMI (kg/m2, patients were divided into BMI <30 and BMI> 30), pilosity levels (mild,moderate, severe) were also recorded. In addition, the time from the recurrence to admission, the number and type of previous operations, and the status of the sinus at presentation (acute, chronic) were recorded. The presence of purulent discharge from the sinus opening and the presence of signs of inflammation or abscess formation in this region were evaluated as acute pilonidal sinus disease (PSD). The presence of serous discharge from the sinus opening and absence of abscess formation were evaluated as chronic PSD. Investigators investigated whether the factors mentioned above affect the number of applications and recurrence after crystallized phenol treatment (CPT).
The treatment procedure was applied to all patients by one surgical team. One day before the procedure, patients were asked to clean the hair from the waist to the middle of the thighs with depilatory creams or epilation. After local anesthesia was performed around the holes, a thin mosquito clamp was inserted into the sinus and the hairs were removed and the skin around the hole was covered by nitrofurantoin pomade to prevent chemical irritation. Then crystallized phenol was introduced into the sinus with the same clamp. Patients were allowed to return to their daily activities after the procedure. This procedure was performed every 3 weeks. If there was discharge from the wound during the follow-up examination, the procedure was repeated. The closure of the sinus hole and the complete disappearance of the discharge were accepted as healing. After the treatment, follow-up was started. Follow up was done first yearly than five years intervals. All of our patients' contact information was recorded by us and we tried to reach the patients every 5 years by any means (phone or e-mail). Investigators tried to follow them up by contacting them periodically, whether they contact us or not. According to this follow-up, patients were analyzed by divided into 3 groups(1-5 years, 5-10 years, 10-20 years). Patients who could not be reached by any means of communication were included in the unreachable group. Patients were recommended to have hair removal at the wound site once a month for 6 years.
Number of crystallized phenol application, presence of recurrence and number of recurrence after CPT and follow-up data were evaluated. Recurrence of the sinus hole which was found to occur again at least 6 months after being determined to be closed was considered as recurrence. If no recurrence was observed during the follow-up or if post-CPT recurrence was healed after treatment, CPT was considered successful.
- Conditions
- Pilonidal Sinus
- Being tested
- Crystallized phenol treatment
- Keywords
- recurrent pilonidal disease, nonoperative treatment, crystallized phenol
- Medical subject headings
- Pilonidal Sinus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Crystallized phenol treatmentProcedure or surgery
| Study group | Role | What they receive |
|---|---|---|
| Recurrent pilonidal sinus | Postoperative recurrent pilonidal sinus disease Receives: Procedure: Crystallized phenol treatment |
What is being measured
The primary outcome is the main question the study is designed to answer.
Long term effect of crystallized phenol treatment in recurrent pilonidal sinus
All participants we applied to crystallized phenol treatment (CPT) were contacted via e-mail, telephone or face-to-face interview and questioned whether there was a recurrence. The number of CPT applications and sinus characteristics (primer openings, seconder openings, sinus presentation etc.) were compared between recurrent participants and non-recurrent participants. The number of CPT application and sinus characteristic features was obtained patients files that were recorded in first consult.
Measured: January 1995-February 2015
Secondary outcomes (1)
The effects of factors playing a role in the etiology of pilonidal sinus on treatment results
All participants we applied to crystallized phenol treatment were contacted via e-mail, telephone or face-to-face interview and questioned whether there was a recurrence. The relationship between relapsed participants and non-relapsed participants was investigated between the factors accused in etiology (gender, BMI, family history, pilosity levels, skin tone etc.). Factors accused in etiology were obtained patients files that were recorded in first consult.
Measured: January 1995-February 2016
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Jun 2020
- Study start1 Mar 1995
- Primary completion1 Feb 2015
- Study completion1 Feb 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (10)Papers the sponsor has linked to this study.
- Other trials for Pilonidal SinusStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Retrospective
- Enrolment
- 227 participants (actual)
Sponsor and investigators
- Lead sponsor
- Osman DOĞRU
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Osman DOĞRU, Konya Meram State Hospital
- Investigators
- Ersin TURAN, 3, Study chair, Konya Education and Research HospitalRamazan Saygın KERİMOĞLU, 4, Study chair, Konya Education and Research HospitalEmet Ebru NAZİK, 5, Study chair, Konya Education and Research HospitalEbru Esen, 6, Study chair, Konya Education and Research Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04423510
- Sponsor's protocol ID
- KonyaTRH01
- Status last verified
- Jun 2020
- First submitted
- 4 Jun 2020
- Last updated
- 9 Jun 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: We are planned to share that all of individual participant data.
Publications
Lund JN, Leveson SH. Fibrin glue in the treatment of pilonidal sinus: results of a pilot study. Dis Colon Rectum. 2005 May;48(5):1094-6. doi: 10.1007/s10350-004-0905-4.
PubMed 15868239Dessily M, Charara F, Ralea S, Alle JL. Pilonidal sinus destruction with a radial laser probe: technique and first Belgian experience. Acta Chir Belg. 2017 Jun;117(3):164-168. doi: 10.1080/00015458.2016.1272285. Epub 2017 Jan 6.
PubMed 28056720Othman I. Skin glue improves outcome after excision and primary closure of sacrococcygeal pilonidal disease. Indian J Surg. 2010 Dec;72(6):470-4. doi: 10.1007/s12262-010-0170-9. Epub 2010 Nov 16.
PubMed 22131657Stauffer VK, Luedi MM, Kauf P, Schmid M, Diekmann M, Wieferich K, Schnuriger B, Doll D. Common surgical procedures in pilonidal sinus disease: A meta-analysis, merged data analysis, and comprehensive study on recurrence. Sci Rep. 2018 Feb 15;8(1):3058. doi: 10.1038/s41598-018-20143-4.
PubMed 29449548Doll D, Luedi MM, Wysocki AP. Pilonidal sinus disease guidelines: a minefield? Tech Coloproctol. 2016 Apr;20(4):263-4. doi: 10.1007/s10151-015-1398-y. Epub 2015 Dec 17. No abstract available.
PubMed 26681445Dag A, Colak T, Turkmenoglu O, Sozutek A, Gundogdu R. Phenol procedure for pilonidal sinus disease and risk factors for treatment failure. Surgery. 2012 Jan;151(1):113-7. doi: 10.1016/j.surg.2011.07.015. Epub 2011 Oct 6.
PubMed 21982072Kaymakcioglu N, Yagci G, Simsek A, Unlu A, Tekin OF, Cetiner S, Tufan T. Treatment of pilonidal sinus by phenol application and factors affecting the recurrence. Tech Coloproctol. 2005 Apr;9(1):21-4. doi: 10.1007/s10151-005-0187-4.
PubMed 15868494Dogru O, Camci C, Aygen E, Girgin M, Topuz O. Pilonidal sinus treated with crystallized phenol: an eight-year experience. Dis Colon Rectum. 2004 Nov;47(11):1934-8. doi: 10.1007/s10350-004-0720-y.
PubMed 15622588Aygen E, Arslan K, Dogru O, Basbug M, Camci C. Crystallized phenol in nonoperative treatment of previously operated, recurrent pilonidal disease. Dis Colon Rectum. 2010 Jun;53(6):932-5. doi: 10.1007/DCR.0b013e3181d8283b.
PubMed 20485008Emiroglu M, Karaali C, Esin H, Akpinar G, Aydin C. Treatment of pilonidal disease by phenol application. Turk J Surg. 2017 Mar 1;33(1):5-9. doi: 10.5152/UCD.2016.3532. eCollection 2017.
PubMed 28589180
Study at a glance
From the registry record, last updated by the sponsor on 9 Jun 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Previously Operated Recurrent Pilonidal Sinus Treated With Crystallized Phenol: Twenty Years Experience
- ClinicalTrials.gov ID
- NCT04423510
- Acronym / sponsor ID
- KonyaTRH01
- Conditions
- Pilonidal Sinus
- Keywords
- recurrent pilonidal disease, nonoperative treatment, crystallized phenol
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 227 participants (actual)
- Lead sponsor
- Osman DOĞRUUniversity, hospital or other
- Study start
- 1 Mar 1995 (actual)
- Primary completion
- 1 Feb 2015 (actual)
- Study completion
- 1 Feb 2016 (actual)
- First posted
- 9 Jun 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Postoperative recurrent pilonidal sinus disease is troublesome and its treatment is challenge. Many treatment modalities have been advocated in the treatment of recurrent pilonidal sinus disease; however, there is still no consensus in the literature. Some minimally invasive techniques are used alone or as an adjunct to surgery. Crystallized phenol is the most popular method in the nonoperative treatment of primer pilonidal sinus disease. But its long term effect in the postoperative recurrent cases is unclear. Investigators aimed to present the long-term efficacy of crystallized phenol treatment on postoperative recurrent pilonidal sinus disease through our results collected within the last 20 years.
Detailed description
Study data were collected prospectively and analyzed retrospectively. The demographic data of the patients, other parameters such as smoking, whether they sit a lot due to occupation (sitting at work for at least 6 hours a day), skin tone (whiter, darker), presence of positive family history, BMI (kg/m2, patients were divided into BMI <30 and BMI> 30), pilosity levels (mild,moderate, severe) were also recorded. In addition, the time from the recurrence to admission, the number and type of previous operations, and the status of the sinus at presentation (acute, chronic) were recorded. The presence of purulent discharge from the sinus opening and the presence of signs of inflammation or abscess formation in this region were evaluated as acute pilonidal sinus disease (PSD). The presence of serous discharge from the sinus opening and absence of abscess formation were evaluated as chronic PSD. Investigators investigated whether the factors mentioned above affect the number of applications and recurrence after crystallized phenol treatment (CPT).
The treatment procedure was applied to all patients by one surgical team. One day before the procedure, patients were asked to clean the hair from the waist to the middle of the thighs with depilatory creams or epilation. After local anesthesia was performed around the holes, a thin mosquito clamp was inserted into the sinus and the hairs were removed and the skin around the hole was covered by nitrofurantoin pomade to prevent chemical irritation. Then crystallized phenol was introduced into the sinus with the same clamp. Patients were allowed to return to their daily activities after the procedure. This procedure was performed every 3 weeks. If there was discharge from the wound during the follow-up examination, the procedure was repeated. The closure of the sinus hole and the complete disappearance of the discharge were accepted as healing. After the treatment, follow-up was started. Follow up was done first yearly than five years intervals. All of our patients' contact information was recorded by us and we tried to reach the patients every 5 years by any means (phone or e-mail). Investigators tried to follow them up by contacting them periodically, whether they contact us or not. According to this follow-up, patients were analyzed by divided into 3 groups(1-5 years, 5-10 years, 10-20 years). Patients who could not be reached by any means of communication were included in the unreachable group. Patients were recommended to have hair removal at the wound site once a month for 6 years.
Number of crystallized phenol application, presence of recurrence and number of recurrence after CPT and follow-up data were evaluated. Recurrence of the sinus hole which was found to occur again at least 6 months after being determined to be closed was considered as recurrence. If no recurrence was observed during the follow-up or if post-CPT recurrence was healed after treatment, CPT was considered successful.
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Recurrent pilonidal sinus | – | Procedure: Crystallized phenol treatmentPostoperative recurrent pilonidal sinus disease |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- The patients who previous operated recurrent pilonidal sinus disease and who accepted crystallized phenol treatment were included in the study. Patients who at least one year of treatment and contacting later were included in our study.
Key inclusion criteria (3 listed)
- Previous operated recurrent pilonidal sinus disease
- Follow-up period of more than 12 months
- The patients who connection by e-mail or telephone
Key exclusion criteria (3 listed)
- Primer pilonidal sinus disease
- Follow-up period of less than 12 months
- The patients who can't connection by e-mail or telephone
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Crystallized phenol treatment | Procedure or surgery | Recurrent pilonidal sinus |
Primary outcome
Long term effect of crystallized phenol treatment in recurrent pilonidal sinus
Time frame: January 1995-February 2015
All participants we applied to crystallized phenol treatment (CPT) were contacted via e-mail, telephone or face-to-face interview and questioned whether there was a recurrence. The number of CPT applications and sinus characteristics (primer openings, seconder openings, sinus presentation etc.) were compared between recurrent participants and non-recurrent participants. The number of CPT application and sinus characteristic features was obtained patients files that were recorded in first consult.
1 secondary outcome
The effects of factors playing a role in the etiology of pilonidal sinus on treatment results
Time frame: January 1995-February 2016
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Jun 2020.
- Background: PubMed 15868239Lund JN, Leveson SH. Fibrin glue in the treatment of pilonidal sinus: results of a pilot study. Dis Colon Rectum. 2005 May;48(5):1094-6. doi: 10.1007/s10350-004-0905-4.
- Background: PubMed 28056720Dessily M, Charara F, Ralea S, Alle JL. Pilonidal sinus destruction with a radial laser probe: technique and first Belgian experience. Acta Chir Belg. 2017 Jun;117(3):164-168. doi: 10.1080/00015458.2016.1272285. Epub 2017 Jan 6.
- Background: PubMed 22131657Othman I. Skin glue improves outcome after excision and primary closure of sacrococcygeal pilonidal disease. Indian J Surg. 2010 Dec;72(6):470-4. doi: 10.1007/s12262-010-0170-9. Epub 2010 Nov 16.
- Results publication: PubMed 29449548Stauffer VK, Luedi MM, Kauf P, Schmid M, Diekmann M, Wieferich K, Schnuriger B, Doll D. Common surgical procedures in pilonidal sinus disease: A meta-analysis, merged data analysis, and comprehensive study on recurrence. Sci Rep. 2018 Feb 15;8(1):3058. doi: 10.1038/s41598-018-20143-4.
- Results publication: PubMed 26681445Doll D, Luedi MM, Wysocki AP. Pilonidal sinus disease guidelines: a minefield? Tech Coloproctol. 2016 Apr;20(4):263-4. doi: 10.1007/s10151-015-1398-y. Epub 2015 Dec 17. No abstract available.
- Results publication: PubMed 21982072Dag A, Colak T, Turkmenoglu O, Sozutek A, Gundogdu R. Phenol procedure for pilonidal sinus disease and risk factors for treatment failure. Surgery. 2012 Jan;151(1):113-7. doi: 10.1016/j.surg.2011.07.015. Epub 2011 Oct 6.
- Results publication: PubMed 15868494Kaymakcioglu N, Yagci G, Simsek A, Unlu A, Tekin OF, Cetiner S, Tufan T. Treatment of pilonidal sinus by phenol application and factors affecting the recurrence. Tech Coloproctol. 2005 Apr;9(1):21-4. doi: 10.1007/s10151-005-0187-4.
- Results publication: PubMed 15622588Dogru O, Camci C, Aygen E, Girgin M, Topuz O. Pilonidal sinus treated with crystallized phenol: an eight-year experience. Dis Colon Rectum. 2004 Nov;47(11):1934-8. doi: 10.1007/s10350-004-0720-y.
- Results publication: PubMed 20485008Aygen E, Arslan K, Dogru O, Basbug M, Camci C. Crystallized phenol in nonoperative treatment of previously operated, recurrent pilonidal disease. Dis Colon Rectum. 2010 Jun;53(6):932-5. doi: 10.1007/DCR.0b013e3181d8283b.
- Results publication: PubMed 28589180Emiroglu M, Karaali C, Esin H, Akpinar G, Aydin C. Treatment of pilonidal disease by phenol application. Turk J Surg. 2017 Mar 1;33(1):5-9. doi: 10.5152/UCD.2016.3532. eCollection 2017.
- Individual participant dataSharing planned: Yes. We are planned to share that all of individual participant data.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Ersin TURAN, 3 study chair
Konya Education and Research Hospital
Ramazan Saygın KERİMOĞLU, 4 study chair
Konya Education and Research Hospital
Emet Ebru NAZİK, 5 study chair
Konya Education and Research Hospital
Questions about this trial
What is this clinical trial studying?
An observational study of Pilonidal Sinus, run by Osman DOĞRU.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 9 Jun 2020. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Long term effect of crystallized phenol treatment in recurrent pilonidal sinus (time frame: January 1995-February 2015). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04423510, which also lists 10 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Jun 2020; AzTrials last refreshed its copy on 7 Nov 2026.