New PET scan could spot hidden endometriosis lesions
NCT ID NCT07053982
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is testing whether a special PET scan called 18F-FES PET/CT can find endometriosis lesions more accurately than standard MRI. The scan measures estrogen receptors in the lesions, which may help doctors understand pain levels and guide treatment. About 20 women with endometriosis will take part, including those with high pain and those with low or no pain.
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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 20 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2026
- Expected to finish
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Mar 2028
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Female participants only
- 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: Cases: \- Painful patients with a VAS ≥ 4 treated surgically for painful symptoms related to endometriosis; Controls: * Patient with a VAS \< 4 treated surgically for endometriosis in the context of infertility; * Age \> 18 years; * Patient who provided informed consent; * Patients who underwent a preoperative MRI and were not contraindicated for \[18F\]-FES PET/CT; * Patient who underwent surgery mid-cycle; * Affiliation to a social security scheme Exclusion Criteria: * Patient treated for endometriosis without surgery; * Pregnant patient * Patient taking hormone therapy * Menopausal patient * Hypersensitivity to the active substance (Fluoroestradiol (18F)) or to any of the excipients * Patient under legal protection * Claustrophobic patient
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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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Toulouse, Rangueil Hospital
RECRUITINGToulouse, 65360, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can Pre-Surgery pelvic floor therapy stop endometriosis pain after the operation?
- Appendix: the hidden driver of endometriosis pain?
- Allergy pill put to the test against endometriosis pain
- Can ultrasound and tissue clues reveal which endometriosis lesions carry cancer risk?
- Can AI personalize exercise to ease pelvic pain?
- Can AI learn to spot endometriosis and fibroids on ultrasound?