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Could a simple alcohol injection ease endometrioma pain?

NCT ID NCT06955221

Symptom relief Sponsor: Hospital Universitari de Bellvitge Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 11, 2026 · Updated 11 times

Summary

This study tests whether ultrasound-guided alcohol sclerotherapy can reduce pelvic pain and improve quality of life in women aged 18-45 with ovarian endometriomas. Participants are randomly assigned to receive the procedure or no treatment (expectant management) and are followed for 6 months. The goal is to see if this minimally invasive approach offers a better alternative to surgery or watchful waiting.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
alcohol sclerotherapy
What this could lead to
If it works, this could offer a less invasive option to manage endometrioma-related pain and improve quality of life without surgery.
What could go wrong
This is a mid-sized trial with no blinding, so results may be influenced by placebo effects. The procedure carries risks like infection or recurrence, and long-term benefits are uncertain.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

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

About 288 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2025

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 45 years

Sex

Female participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Female sex * Age ≥18 and ≤45 years * Ultrasound suspicion of unilocular endometrioma or with a thin septum less than 3 mm * Size between 30-100 mm, persistent for at least 3-6 months since diagnosis * Ca125 marker \<300 UI/mL and HE4 \< 70 pM * Signed informed consent Exclusion Criteria: * Age \<18 or \>45 years * History of ovarian or uterine cancer * Endometrioma size \<30 mm or \>100 mm * Indication for surgical treatment of the endometrioma due to suspected severe extra-ovarian endometriosis or any other cause * Ultrasound suspicion of dermoid cysts, anechoic cysts, or cysts with high risk of malignancy * Ca125 \>300 UI/mL * HE4 \>70 pM * Pregnant women * Patients who do not wish to participate in the study or who are mentally incapacitated

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Conditions

The condition(s) this trial relates to.

endometriosis ovarian endometriosis Pelvic Pain

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Endometrioma Pelvic pain Quality of life Ultrasound therapy; complications

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    29 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Clínica Sanabria

    NOT_YET_RECRUITING

    Granada, 18012, Spain

  • Consorci Corporació Sanitària Parc Taulí

    NOT_YET_RECRUITING

    Sabadell, Barcelona, 08208, Spain

  • Consorci Sanitari Integral

    RECRUITING

    L'Hospitalet de Llobregat, Barcelona, 08906, Spain

  • Consorci Sanitari de l'Anoia

    NOT_YET_RECRUITING

    Igualada, Barcelona, 08700, Spain

  • Hospital Clínico San Carlos

    RECRUITING

    Madrid, 28040, Spain

  • Hospital Clínico Universitario Lozano Blesa

    NOT_YET_RECRUITING

    Zaragoza, 50009, Spain

  • Hospital General Universitario Los Arcos del Mar Menor

    RECRUITING

    San Javier, Murcia, 30739, Spain

  • Hospital General de Granollers

    NOT_YET_RECRUITING

    Granollers, Barcelona, 08042, Spain

  • Hospital Recoletas Salud Campo Grande

    RECRUITING

    Valladolid, 47007, Spain

  • Hospital San Juan de Dios de Martorell

    NOT_YET_RECRUITING

    Martorell, Barcelona, 08760, Spain

  • Hospital Universitari General de Catalunya

    NOT_YET_RECRUITING

    Sant Cugat del Vallès, Barcelona, 08195, Spain

  • Hospital Universitari Sant Joan de Reus

    NOT_YET_RECRUITING

    Reus, Tarragona, 43204, Spain

  • Hospital Universitario 12 de Octubre

    RECRUITING

    Madrid, 28041, Spain

  • Hospital Universitario Arnau de Vilanova

    NOT_YET_RECRUITING

    Lleida, 25198, Spain

  • Hospital Universitario Doctor José Molina Orosa

    NOT_YET_RECRUITING

    Arrecife, Canary Islands, 35500, Spain

  • Hospital Universitario Germans Trias i Pujol

    NOT_YET_RECRUITING

    Badalona, Barcelona, 08916, Spain

  • Hospital Universitario Joan XXIII

    NOT_YET_RECRUITING

    Tarragona, 43005, Spain

  • Hospital Universitario Ramón y Cajal

    RECRUITING

    Madrid, 28034, Spain

  • Hospital Universitario San Pedro

    NOT_YET_RECRUITING

    Logroño, La Rioja, 26006, Spain

  • Hospital Universitario Son Espases

    NOT_YET_RECRUITING

    Palma de Mallorca, Balearic Islands, 07210, Spain

  • Hospital Universitario de Bellvitge

    RECRUITING

    L'Hospitalet de Llobregat, Barcelona, 08907, Spain

  • Hospital Universitario de Burgos

    NOT_YET_RECRUITING

    Burgos, 09006, Spain

  • Hospital Universitario de Cabueñes

    NOT_YET_RECRUITING

    Gijón, Principality of Asturias, 33394, Spain

  • Hospital Universitario de Canarias

    NOT_YET_RECRUITING

    San Cristóbal de La Laguna, Santa Cruz De Tenerife, 38320, Spain

  • Hospital Universitario de Jaén

    NOT_YET_RECRUITING

    Jaén, 23007, Spain

  • Hospital Universitario de Álava - Txagorritxu

    NOT_YET_RECRUITING

    Vitoria-Gasteiz, Álava, 01009, Spain

  • Hospital de Viladecans

    RECRUITING

    Viladecans, Barcelona, 08840, Spain

  • Hospital del Mar

    RECRUITING

    Barcelona, 08003, Spain

  • Parc Sanitari Sant Joan de Deu

    NOT_YET_RECRUITING

    Sant Boi de Llobregat, Barcelona, 08830, Spain

More trials for these conditions

Other studies related to the condition(s) this trial covers.