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International Ovarian Tumour Analysis (IOTA) Phase 5

A Multicentre Study to Examine the Short and Long Term Outcomes of the Conservative Management of Benign-looking Adnexal Masses and the Pre-operative Characterisation of Ovarian Tumours

Status
UNKNOWN
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01698632
Acronym
IOTA-5
Enrollment
15000
Registered
2012-10-03
Start date
2012-01-31
Completion date
2021-12-31
Last updated
2020-04-14

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

Conditions

Adnexal Masses, Ovarian Cysts, Ovarian Tumors

Keywords

Adnexal masses, Ovarian cysts, Ovarian tumors

Brief summary

The purpose of this study is to learn more about the appearance and behavior of benign-looking adnexal masses. * Benign-looking means that when viewed here by ultrasound it has the appearance of looking not harmful or not malignant. * Adnexal refers to the 'adnexa', the space in the female pelvis on either side of the uterus (or where the uterus used to be if you previously had a hysterectomy). The adnexa includes, but is not limited to, the ovaries and the fallopian tubes. * Masses refers to a variety of structures, including but not limited to: * ovarian cysts that are fluid filled sacs within or attached to an ovary * ovarian tumors that can be solid tissue or a combination of cysts and solid tissue * hydrosalpinges that are fluid collections in the fallopian tube Many women have what appear to be benign adnexal masses. Many times, removal of the masses with surgery is not necessary. Often surgery is performed unnecessarily, for fear that these masses could be cancer. There is not much information available for doctors to know how and when to follow these masses, or which ones will become cancer. This study will combine information from centers all around the world regarding the behavior of all types of benign adnexal masses. The aim of this study is to develop decision tools for doctors to know the best way to treat these masses in order to improve the detection of ovarian cancer while at the same time reduce the number of unnecessary operations.

Interventions

None listed

Sponsors

KU Leuven
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

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

Inclusion criteria

* Any woman at least 18 years old with an adnexal mass. * Any mass with benign ultrasound morphology may be suitable for conservative management. * Pregnant patients can be included, but their data will be analysed separately.

Exclusion criteria

* Cysts that are deemed to be clearly physiological and less than 3 cm in maximum diameter are not eligible for inclusion. * Any cyst with features of malignancy is excluded from the conservative management * The denial or withdrawal of oral informed consent

Design outcomes

Primary

MeasureTime frame
Frequency of complications such as rupture, torsion, or malignancy in patients with benign looking conservatively treated massesUp to five years

Secondary

MeasureTime frameDescription
Test the published IOTA diagnostic models for predicting that a mass is malignant at first visit or benignUp to five yearsAlso to predict complications (e.g. occurrence of malignancy and other) during long-term follow-up using the diagnostic models

Other

MeasureTime frameDescription
Investigate factors related to the need for surgery during long-term follow-upUp to five years
Study natural history of conservatively treated benign-looking adnexal massesUp to five yearsAlso to establish descriptive curves of the longitudinal changes seen in parameters from conservatively managed benign tumors (for example, change in diameter, size of any solid component, number of papillations or color score)

Countries

United States

Outcome results

None listed

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