Evidence map›Paper›PMID 41907294›Full record

ArticleFrontiers in medicine2026

Histological signatures of hormone replacement therapy in the endometrium.

Mena Abdalla

Abstract read
In one paragraph

Article in Frontiers in medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0cells of the map it votes in
0citing papers in PubMed
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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author.

Mena AbdallaPrincess Royal University Hospital, King's College Hospital NHS Foundation Trust, London, United Kingdom.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Hormone replacement therapy (HRT) is widely prescribed for managing menopausal symptoms, yet its effects on the endometrium remain clinically important. While large-scale studies have established that estrogen-only HRT increases endometrial cancer risk and continuous combined regimens reduce this risk, real-world data on endometrial histology remain valuable for understanding contemporary practice patterns. Methods: We conducted a retrospective analysis of women who underwent hysteroscopy with endometrial sampling at Princess Royal University Hospital. Of the 62 patients, we included 24 (38.7%) with explicitly documented HRT status, excluding 38 (61.3%) whose HRT status was unknown or inadequately documented. We characterized HRT regimens by type, route, schedule, and duration when available. Histological findings were compared between HRT users ( Results: Among 24 patients (mean age 57.3 ± 6.8 years), 13 (54.2%) received HRT, and 11 (45.8%) did not. HRT regimens included combined estrogen-progestogen therapy ( Conclusion: In this retrospective case series, no endometrial hyperplasia or cancer was identified among 24 women with documented HRT status. However, the study was severely underpowered to detect rare but clinically significant pathologies. The absence of abnormal findings likely reflects the small sample size and low baseline incidence, rather than a protective effect. The high rate of missing HRT documentation (61.3%) represents a significant quality gap. These findings underscore the limitations of small retrospective series and highlight the need for adequately powered, prospective studies with systematic HRT characterization.

Indexed as

endometrial pathologyendometrial thicknesshormone replacement therapyhysteroscopypostmenopausal bleedingretrospective studysample sizestatistical power

Identifiers

PMID41907294
PMCPMC13021893

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.