A Case of Bilateral Decidualized Endometriomas during Pregnancy: Radiologic-pathologic Correlation.

Go Nakai, Remi Kitano, Natsuko Yoshimizu, Kiyohito Yamamoto, Akira Higashiyama, Hiroshi Juri, Atsushi Nakamoto, Kazuhiro Yamamoto, Takashi Yamada, Yoshinobu Hirose, Masahide Ohmichi, Yoshifumi Narumi
The Kobe journal of medical sciences · 2015 · vol. 61(2) , pp. E40–6 · doi:10.24546/81008930 · PMID:26628013 · W2105934614
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⚙ AI-generated summary by claude@2026-06, 2026-06-09 ⓘ

This case study details the radiologic-pathologic correlation of bilateral decidualized endometriomas during pregnancy, highlighting MRI's role in differentiating them from malignant transformation based on signal intensity and diffusion coefficients.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-09 ⓘ

The paper reports a pregnancy case with bilateral decidualized endometriomas and provides radiologic–pathologic correlation. The authors describe imaging findings during pregnancy and then compare them with the histopathologic characteristics of the surgically evaluated lesions. A key finding is that the radiologic appearance of decidualized endometriomas aligns with the underlying pathologic changes seen in the specimens. The study’s main limitation is that it is a single case report, so broader generalization is not possible. This paper is centrally about endometriosis — specifically, it documents and correlates imaging and pathology of bilateral decidualized endometriomas during pregnancy.

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Abstract

Clinical differentiation between decidualized endometrioma and malignant transformation still poses difficulties as both are intracystic vascularized excrescences of an endometrial cyst and exhibit similar characteristics on color-flow Doppler sonography. This is a characteristic sonographic finding associated with ovarian cancer, but MRI can provide further information about mural excrescences that can aid in their differential diagnosis; for example, the signal of decidualized endometriomas is isointense with the placenta within the uterus on all sequences and the apparent diffusion coefficient is higher than that of malignant mural nodules. Thus, MRI should be an aid in deciding whether to intervene during pregnancy. However, considering that it is not yet possible to clearly differentiate decidualized endometriomas from ovarian cancer, surgery or watchful observation may still be needed to exclude the possibility of malignancy.

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Condition tags

endometriosisendometrioma

MeSH descriptors

Endometriosis Endometriosis Pregnancy Complications Adult Decidua Decidua Decidua Diagnosis, Differential Endometriosis Female Humans Magnetic Resonance Imaging Ovarian Neoplasms Ovarian Neoplasms Ovarian Neoplasms Pregnancy Pregnancy Complications Pregnancy Complications, Neoplastic Pregnancy Complications, Neoplastic Radiography

Citation neighborhood

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

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