Skip to content

Endometrioma Sclerotherapy and Ovarian Preservation

Endometrioma Sclerotherapy and Ovarian Preservation: a Randomised Control Trial of Laparoscopic Sclerotherapy vs Traditional Excision of Endometrioma

Status
Recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06775769
Acronym
ENDOSAVE
Enrollment
60
Registered
2025-01-15
Start date
2025-02-21
Completion date
2027-12-31
Last updated
2025-11-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endometrioma

Keywords

Endometrioma, Endometriosis, Sclerotherapy

Brief summary

A randomised controlled trial assessing ovarian reserve after laparoscopic ethanol sclerotherapy of ovarian endometrioma compared to standard treatment of surgical excision of endometrioma. Secondary outcomes will include endometrioma recurrence, symptomatology and inflammatory environment.

Detailed description

Participants with endometrioma(ta), identified on imaging, who are opting for surgical management of endometriosis will be randomly allocated to laparoscopic ethanol sclerotherapy of endometrioma or laparoscopic surgical excision of endometrioma(ta). Any concurrent endometriosis identified at surgery will be excised as per routine care. Ovarian reserve will be assessed by serum anti-Mullarian hormone (AMH) and antral follicle count (AFC), recurrence will me assessed by transvaginal ultrasound, symptomatology will be assessed by EHP-30 questionnaires and changes in inflammation assessed in serum and endometrial biopsy. Each participant will be followed up for a total of 24 months from surgery.

Interventions

PROCEDURESclerotherapy

Laparoscopic ethanol sclerotherapy of endometrioma

PROCEDURERoutine Care

Routine surgical management of endometrioma

Sponsors

Chelsea and Westminster NHS Foundation Trust
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Masking description

Ultra-sonographer

Intervention model description

Randomised control trial

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 45 Years
Healthy volunteers
No

Inclusion criteria

* Female (XX genotype, assigned female at birth) * Age 18-40 * Finding of suspected uni- or bi-lateral ovarian endometrioma(ta) of ≥ 2cm on TVUSS and/or pelvic MRI scan (TVUSS, a uni- or multi-locular ovarian cystic lesion with low level echoes and diffuse homogeneous ground glass appearance; MRI any of, ovarian lesion hyperintense T1 without loss of signal on T1 fat-suppressed images, hypointense T2 exhibiting shading sign and/or T2 dark spot sign, variable restricted diffusion on DWI) * Appropriate to be listed for laparoscopic excision of endometrioma (Endometrioma ≥2cm, pain symptoms attributable to endometriosis where medical management is unsuccessful or unacceptable to the patient, to facilitate ART)

Exclusion criteria

* Postmenopausal status * Suspicion of malignancy * Unable to undergo TVUSS * Declines to take part in the study * Unable to understand verbal or written information in English * Lack of capacity to consent at the point of recruitment * Known safeguarding issues

Design outcomes

Primary

MeasureTime frameDescription
Ovarian Reserve24 monthsTo determine the statistical difference in ovarian reserve pre- and post- treatment (as measured by serum AMH at 3, 6, 12 and 24 months and antral follicle count at 6, 12 and 24 months) in participants randomised to receive laparoscopic ethanol sclerotherapy or laparoscopic excision of endometrioma

Secondary

MeasureTime frameDescription
Endometrioma recurrence24 monhtsTo determine if laparoscopic ethanol sclerotherapy for ovarian endometrioma alters recurrence of ovarian endometrioma (as measured by TVUSS at 6, 12 and 24 months) as compared to laparoscopic excision of endometrioma
Symptomatology24 monhtsTo determine if laparoscopic ethanol sclerotherapy for ovarian endometrioma affects symptomatology (as recorded by EHP-30) as compared to laparoscopic excision of endometrioma at 3, 6, 12 and 24 months
Inflammation24 monhtsTo determine if laparoscopic ethanol sclerotherapy for ovarian endometrioma alters the inflammatory environment (as measured in blood at 3, 6, 12 and 24 months, and endometrial biopsy at 6 months) as compared to laparoscopic excision of endometrioma

Countries

United Kingdom

Contacts

Primary ContactSarah Bennet, BSc MBBS MRCOG
sarah.bennet25@imperial.ac.uk07983980924
Backup ContactThomas Bainton, BM BCh MRCOG MA(Oxon)
tombainton@doctors.org.uk

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026