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RecruitingNCT07816133ENDOATUpdated Sep 11, 2026

Study on the Ultrasound and Biological Characteristics of Atypical Endometriosis.

An observational study in Endometriosis, sponsored by Casa di Cura Dott. Pederzoli. Recruiting at 1 site in Italy. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-11.

Sponsored by Casa di Cura Dott. Pederzoli · Observational

Study type
Observational
Model
Case-control
Time perspective
Cross-sectional
Enrollment
200
Ages
18 Years and older
Sex
Female
01

Study summary

This study hypothesizes that the histological, immunophenotypic, and molecular characterization of atypical endometriotic lesions may be related to specific clinical and ultrasound features.Identifying potentially atypical lesions would allow for more accurate stratification of patients, distinguishing definitely benign from potentially atypical endometriosis.

The targeted study of endometriosis, both typical and atypical, also with reference to the inflammatory microenvironment, as well as immunophenotypic and molecular characteristics, could allow the formulation of pathogenic hypotheses on the development and progression of atypia towards malignant neoplasms.

Read the detailed description

Observational, retrospective-prospective, cross-sectional, single-center study conducted on patients undergoing laparoscopic surgery for benign or malignant pathology (endometrial or ovarian). The study does not include changes to the standard care pathway and all procedures are in normal clinical practice. The indication for surgical treatment is formulated on the basis of the most up-to-date guidelines on the subject. The study includes two phases:

  • Single-center observational retrospective study with case collection starting June 2024
  • Single-center prospective observational study with recruitment of new cases for 30 months after the start of the project.

At the time of the pre-hospitalization visit, the patient will be clearly and understandably illustrated with the rationale and objective of the study, the planned procedures (which do not deviate from normal clinical practice) and the data that are intended to be collected for each patient. There are four groups under comparison: patients with endometriosis without atypia and patients with neoplasia not associated with endometriosis represent the "controls", while patients with atypical endometriosis and patients with cancerized endometriosis or neoplasia associated with endometriosis represent the "cases". Patients with ovarian / endometrial neoplasia not associated with endometriosis will serve as a control for both the ultrasound appearance of the lesions and for anatomopathological analysis (including immunohistochemical and molecular investigations).

Patients included in the study will undergo a level II gynecological ultrasound with transvaginal technique by experienced operators, the images will be reviewed by two experienced operators.

Patients will be operated on by operators experienced in endometriosis surgery. The anatomopathological diagnostic report will be structured sec. International Collaboration on Cancer Reporting (ICCR) (Annexes 1 and 2), which includes essential elements ("core"), and optional elements ("non-core") (https://www.iccr-cancer.org/).

Each case will be evaluated individually and then in doubles by two anatomopathologists experienced in gynecological pathology.

The immunohistochemical and molecular panel are routinely performed in patients with atypical endometriosis, cancerized endometriosis, or endometriosis-associated neoplasia and in neoplasms not associated with endometriosis, therefore the performance of these procedures does not deviate from such clinical practice. In patients with endometriosis "typical", a reduced panel will be performed, if deemed necessary by the pathologist, particularly if there are dubious morphological pictures.

02

Conditions studied

  • Endometriosis

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Keywords

  • endometrioma
  • immunohistochemical and molecular analysis
  • anatomopathological analysis
03

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

patients undergoing laparoscopic surgery for benign or malignant (endometrial or ovarian) pathology

Inclusion criteria

  • Age > 18 years
  • Candidate patients for endometriosis surgery with deep endometriosis (intestine, LUS) and/or endometrioma localizations.
  • Patients who are candidates for surgery for established or suspected endometrial and/or ovarian neoplasm
  • Patients who have performed a level II gynecological ultrasound with an experienced operator in the preoperative process.
  • Patients where there is the technical possibility of performing a transvaginal and/or transrectal ultrasound and the patient's willingness to undergo such an investigation.
  • Signing of informed consent.

Exclusion criteria

Exclusion Criteria:

  • Technical impossibility of performing a transvaginal ultrasound (patient virgo, patient refusal).
  • Previous neoplasms
  • Patient who does not provide their informed consent.
04

Study design

Observational model
Case-control
Time perspective
Cross-sectional
Enrollment
200 participants (estimated)
Patient registry
No

Groups and cohorts

  • prospective observational group

    Other: prospective case-control group

  • retrospective observational group

    Other: Retrospective case-control analysis

Interventions

  • OtherRetrospective case-control analysis

    Single-center observational retrospective study with case collection starting June 2024

  • Otherprospective case-control group

    Single-center prospective observational study with recruitment of new cases for 30 months from the start of the project.

05

What researchers measure

Primary outcomes

  1. Identification of specific histopathological, immunohistochemical and molecular biology features for definable "atypical", "preneoplastic" or "cancerized-neoplastic" lesions and the surrounding microenvironment

    Time frame: through study completion, an average of 1 year

Secondary outcomes

  1. Identification of specific ultrasound features of lesions described in histological examination as "atypical", "preneoplastic", or "cancerized-neoplastic"

    Time frame: through study completion, an average of 1 year

06

Study locations

1 of 1 sites recruiting
  • Ospedale P. Pederzoli Casa di Cura Privata S.p.A.
    Peschiera del Garda, Verona 37019, Italy
    Recruiting
07

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

08

Registry details

Key details

Study ID
NCT07816133
Lead sponsor
Casa di Cura Dott. Pederzoli
Responsible party
Sponsor
First posted
Sep 11, 2026
Start date
Oct 2026 (estimated)
Primary completion
Jan 2029 (estimated)
Completion
Jun 2029 (estimated)
Last update
Sep 11, 2026

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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