ArticleJournal of pathology and translational medicine2026
The significance of papillary architecture in the follow-up biopsies of patients with progestin-treated atypical endometrial hyperplasia.
Article in Journal of pathology and translational 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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Abstract
backgroundFollow-up biopsies in patients with progestin-treated atypical endometrial hyperplasia/endometrioid intraepithelial neoplasia (AH/EIN) may show papillary structures, the significance of which is unclear.
methodsThe authors reviewed 253 serial specimens of 84 consecutive patients diagnosed with AH/EIN, inclusive of each patient's pre-progestin treatment sample and all post-treatment specimens. We assessed the predictive relationship between papillary architecture in a post-treatment biopsy and two study outcomes: AH/EIN or carcinoma in at least one sample subsequent to the one in which papillae were identified, and/or the last specimen received for that patient.
resultsPapillae were identified in only 51.5% of pre-treatment samples but were present in at least one subsequent post-treatment sample for all patients. Post-treatment samples that exhibited papillae and no glandular crowding were associated with AH/EIN in at least one subsequent specimen in 39.7% (29/73) of cases, compared to 24.0% (6/25) in samples with neither papillae nor glandular crowding (p = .227) and 64.0% (16/25) in samples with concurrent gland crowding and papillae (p = .048). Univariate logistic regression analyses showed that the presence of papillae was not associated with study outcomes (odds ratio [OR], 0.99; 95% confidence interval [CI], 0.49 to 1.99; p = .985), as compared with gland crowding (OR, 1.54; 95% CI, 1.04 to 2.27; p = .031), or concurrent papillae and gland crowding (OR, 2.36; 95% CI, 1.01 to 5.52; p = .048).
conclusionsIn post-treatment samples of progestin-treated AH/EIN, the presence of papillary architecture was not demonstrably associated with study outcomes independent of gland crowding, although the concurrent presence of both features may be significantly predictive.
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