A retrospective analysis of ovarian endometriosis during pregnancy

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This retrospective study examined the characteristics and management of ovarian endometriosis in pregnant individuals.

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Abstract

ObjectiveTo clarify the frequency of pregnancy complicated by ovarian endometriosis and to investigate the size change and outcome of ovarian endometriosis during pregnancy.DesignRetrospective study.SettingDepartments of obstetrics and gynecology of the Osaka University and Izumiotsu Municipal Hospitals of Osaka, Japan.Patient(s)Women who delivered between 1996 and 2007.Intervention(s)None.Main outcome measure(s)The frequency of pregnancies complicated by ovarian endometriosis and the size change of the lesions during pregnancy.Result(s)The frequency of ovarian endometriosis-complicated pregnancy has almost quadrupled over the last 12 years, to become the most common adnexal mass detected during pregnancy; it was 0.14% (five cases among 3558 deliveries) during the 6-year period from 1996 to 2001, but has increased to 0.52% (19 cases among 3599 deliveries) during the 6-year period from 2002 to 2007, a statistically significant increase of 3.8-fold. Among 25 ovarian endometriotic lesions observed during pregnancy in 24 women (one case had two lesions), the size of the cyst decreased in 13 lesions (52%), went unchanged in 7 (28%), and increased in 5 (20%), that demonstrated decidualization, abscess and rupture.Conclusion(s)Ovarian endometriosis during pregnancy can be safely observed conservatively; however, further investigation is required to predict the occurrence of abscess formation or rupture of ovarian endometriosis, and to distinguish the enlargements due to malignant transformation from those related to decidualization.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Ovarian Diseases Pregnancy Complications Adult Endometriosis Endometriosis Endometriosis Fallopian Tube Diseases Fallopian Tube Diseases Fallopian Tube Diseases Fallopian Tube Diseases Female Humans Ovarian Diseases Ovarian Diseases Ovarian Diseases Pregnancy Pregnancy Complications Pregnancy Complications Retrospective Studies

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europepmc
last seen: 2026-08-05T06:13:34.187606+00:00
openalex
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