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Japan endometrioma malignant transformation study

Japan endometrioma malignant transformation study - JEMS

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000001876
Enrollment
4000
Registered
2009-04-13
Start date
2007-09-01
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

endometriosis

Interventions

None listed

Sponsors

Japan Society of Obstetrics and Gynecology
Lead Sponsor
Japan Society of Obstetrics and Gynecology
Collaborator

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: *Female patients who signed informed consent documents for the study. *Patients who are pre-menopause, over the ages of 30. *Patients who were diagnosed as endometriosis with chocolate cysts, according to MRI test or postoperative histopathological examination.

Exclusion criteria

Exclusion criteria: *Patients who were diagnosed as ovarian cancer according to diagnostic imaging at the first visit.

Design outcomes

Primary

MeasureTime frame
Incidence of ovarian cancer

Secondary

MeasureTime frame
Episode of oophorectomy/ Incidence of breast cancer/ Incidence of Non-Hodgikin's lymphoma/ Incidence of thyroid cancer/ Episode of pregnancy and birth/ Mortality (all-cause death)

Countries

Japan

Contacts

Public ContactKunihiko Hayashi

Gunma University School of Health Science Epidemiology and Biostatistics

khayashi@gunma-u.ac.jp027-220-8974

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026