Dictionary of Cancer Terms
View in Spanish: Hiperplasia del endometrio
Endometrial hyperplasia (EN-doh-MEE-tree-ul HY-per-PLAY-zhuh)
An abnormal overgrowth of the endometrium (the layer of cells that lines the uterus). There are four types of endometrial hyperplasia: simple endometrial hyperplasia, complex endometrial hyperplasia, simple endometrial hyperplasia with atypia, and complex endometrial hyperplasia with atypia. These differ in terms of how abnormal the cells are and how likely it is that the condition will become cancer.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.