Significant risk of occult cancer in complex non-atypical endometrial hyperplasia.

Arch Gynecol Obstet

Gynecology and Obstetrics Unit, Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, Via Sergio Pansini, 5, 80131, Naples, Italy.

Published: November 2019

Background: In the 2014 WHO classification of endometrial hyperplasia (EH), complex EH is lumped together with simple EH in the benign category of non-atypical EH.

Objective: To assess the risk of coexistent cancer in complex EH and simple EH without atypia, through a systematic review and meta-analysis.

Methods: Electronic databases were searched from their inception to January 2019 for relevant articles.

Results: Twelve studies assessing a total of 804 non-atypical EH were included. The risk of coexistent cancer was significantly higher in complex EH (12.4%) than in simple EH (2%), with an OR of 6.03 (p = 0.0002).

Conclusion: Even in the absence of cytologic atypia, complex EH is associated with a significant risk of coexistent cancer. Further studies are necessary to investigate the need for a revision in the WHO classification.

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http://dx.doi.org/10.1007/s00404-019-05299-2DOI Listing

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