Endometrial Hyperplasia: Different Classification systems and Advantages of WHO 2014 Classification System. | ||
| SVU-International Journal of Medical Sciences | ||
| Article 15, Volume 4, Issue 2, July 2021, Pages 150-154 PDF (313.5 K) | ||
| Document Type: Reviews Articles. | ||
| DOI: 10.21608/svuijm.2020.45949.1016 | ||
| Authors | ||
| Maisa Hashem Mohammed* ; Nagwa Abd El-Sadek Ahmed | ||
| Pathology Department, Faculty of Medicine, Sohag University, Sohag, Egypt | ||
| Abstract | ||
| Background: Endometrial hyperplasia (EH) is a pathological condition which occurs due to unopposed estrogenic effect. It is usually manifest by abnormal uterine bleeding affecting women in 5th and 6th decades of life. Some cases of endometrial hyperplasia especially those with atypical cytological features may progress to endometrial adenocarcinoma, while others follow an indolent course. Several classification systems have been developed over years. Early classifications were based on structural and cytological features. However, the recently developed classification system by WHO in 2014 was based mainly on the cytological atypical features as the architectural features have been proved to be clinically irrelevant. Cellular morphology was also included in this classification system. Conclusions: WHO 2014 classification system described both cellular morphology and nuclear atypia as some newly described variants like atypical mucinous glandular proliferation was proved to be precancerous despite of its minimal cytological atypia. Glandular architectural features were proved to be clinically irrelevant, so they were excluded from this classification. | ||
| Keywords | ||
| Endometrial hyperplasia; Abnormal uterine bleeding; Endometrial carcinoma; Endometrial intraepithelial neoplasia; WHO | ||
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