Endometrioid neoplasia of the ovary: a reappraisal

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This paper reappraises ovarian endometrioid neoplasia by consolidating benign lesion classifications and incorporating clear cell tumors, while omitting low malignant potential entities due to insufficient histologic and clinical data.

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This paper reappraises the classification of ovarian endometrioid neoplasia to address emerging concepts and entities within the field. The author proposes consolidating benign endometrioid lesions under a single heading, thereby avoiding the dual listing found in current World Health Organization classifications. Additionally, clear cell tumors are included within the endometrioid category, while certain low malignant potential tumors are omitted due to insufficient histologic and clinical data. This paper is centrally about endometriosis — specifically focusing on the pathological classification and nomenclature of endometrioid neoplasms arising from or associated with endometriotic tissue.

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Abstract

The emergence in recent years of new concepts and entities pertaining to ovarian endometrioid neoplasia has led to a reappraisal of the subject. In this reappraisal, the double listing of benign endometrioid lesions as both "tumors" and "tumor-like" lesions, as it appears in the World Health Organization (WHO) classification, is being avoided and they are all listed under one heading. Clear cell tumors, which, in the WHO classification, are not listed under endometrioid neoplasia, are included among the latter in the proposed classification. Recently described entities are reviewed, as are those previously listed but not well documented. Some of the WHO listed endometrioid tumors of low malignant potential are omitted from the present discussion, as histologic and clinical data pertaining to such neoplasms are still not available.
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Endometrioid Neoplasia of the Ovary A Reappraisal - Bernard Czernobilsky Summary The emergence in recent years of new concepts and entities pertaining to ovarian endometrioid neoplasia has led to a reappraisal of the subject. In this reappraisal, the double listing of benign endometrioid lesions as both “tumors” and “tumor-like” lesions, as it appears in the World Health Organization (WHO) classification, is being avoided and they are all listed under one heading. Clear cell tumors, which, in the WHO classification, are not listed under endometrioid neoplasia, are included among the latter in the proposed classification. Recently described entities are reviewed, as are those previously listed but not well documented. Some of the WHO listed endometrioid tumors of low malignant potential are omitted from the present discussion, as histologic and clinical data pertaining to such neoplasms are still not available.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Ovarian Neoplasms Adenocarcinoma Adenocarcinoma Adenofibroma Adenofibroma Adult Aged Endometriosis Endometriosis Female Humans Middle Aged Neoplasms, Germ Cell and Embryonal Neoplasms, Germ Cell and Embryonal Ovarian Neoplasms Ovarian Neoplasms

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Source provenance

europepmc
last seen: 2026-09-06T09:34:12.023084+00:00
pubmed
last seen: 2026-05-13T22:10:06.101301+00:00
unpaywall
last seen: 2026-09-08T06:30:58.725006+00:00
License: public-domain-us · commercial use OK · attribution required
Courtesy of the U.S. National Library of Medicine