Human Endometrium and Endometriotic Tissue Obtained Simultaneously

Agneta Bergqvist, Bergqvist A, A Bergqvist, O Ljungberg, Ljungberg O, E Myhre, Myhre E
International journal of gynecological pathology : official journal of the International Society of Gynecological Pathologists · 1984 · vol. 3(2) , pp. 135–145 · doi:10.1097/00004347-198402000-00003 · PMID:6490312 · W2048444019
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⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-06-12 ⓘ

This study examined 47 endometriotic samples from 28 patients and found that most endometriotic tissue exhibited a menstrual phase pattern, often synchronous with the endometrium, but with frequent morphological variability.

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This comparative histological study examined 47 endometriotic samples from 28 patients alongside their simultaneous endometrial biopsies to assess menstrual phase synchronization. The results indicated that 82% of the endometriotic tissue exhibited a distinct menstrual phase pattern, with 70% of those cases showing synchronous timing relative to the eutopic endometrium. However, significant variability in glandular and epithelial cell morphology was frequently observed, and some lesions lacked any recognizable phase pattern despite clear changes in the uterine lining. This paper is centrally about endometriosis — specifically focusing on the histological comparison between ectopic endometriotic implants and eutopic endometrium.

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Abstract

A comparative study on the histological appearance of endometrium and endometriotic tissue obtained simultaneously has been performed. In all, 47 endometriotic samples from 28 patients were examined. In 15 cases, samples from more than one endometriotic lesion were included. The endometriotic tissue had developed a distinctive menstrual phase pattern in 23 patients (82%). In 16 of these patients (70%), the phase pattern was found to be synchronous (+/- 3 days) in the two tissue types. In seven cases (30%), it varied inconsistently as compared with the endometrial phase. In the remaining five cases (18%), no menstrual phase pattern was found in the endometriotic specimens in spite of a well-defined phase in the endometrium. When biopsy specimens from different endometriotic lesions in the same patient showed a menstrual phase pattern, the phase did not differ significantly among the specimens. Although a menstrual phase pattern could be recognized in the endometriotic tissue samples in most cases, a considerable variability in glandular and epithelial cell morphology was frequently found.
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Human Endometrium and Endometriotic Tissue Obtained Simultaneously A Comparative Histological Study - A. Bergqvist - O. Ljungberg - E. Myhre Summary A comparative study on the histological appearance of endometrium and endometriotic tissue obtained simultaneously has been performed. In all, 47 endometriotic samples from 28 patients were examined. In 15 cases, samples from more than one endometriotic lesion were included. The endometriotic tissue had developed a distinctive menstrual phase pattern in 23 patients (82%). In 16 of these patients (70%), the phase pattern was found to be synchronous (± 3 days) in the two tissue types. In seven cases (30%), it varied inconsistently as compared with the endometrial phase. In the remaining five cases (18%), no menstrual phase pattern was found in the endometriotic specimens in spite of a well-defined phased in the endometrium. When biopsy specimens from different endometriotic lesions in the same patient showed a menstrual phase pattern, the phase did not differ significantly among the specimens. Although a menstrual phase pattern could be recognized in the endometriotic tissue samples in most cases, a considerable variability in glandular and epithelial cell morphology was frequently found.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Endometrium Menstrual Cycle Ovarian Neoplasms Peritoneal Neoplasms Adult Biopsy Endometriosis Endometrium Estradiol Estradiol Female Humans Middle Aged Ovarian Neoplasms Ovary Ovary Peritoneal Neoplasms Peritoneum Peritoneum

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