Endometrial hyperplasia is a condition in which the endometrium proliferates and becomes abnormally thick due to excessive sensitivity of endometrial cells to estrogen.
Above all, if there are abnormalities in the cell, it may develop into endometrial cancer, so caution is required. If the conditions are met, the uterus can be preserved, and it is possible to become pregnant by in vitro fertilization / embryo transfer. (Elizur SE, et al Fertility And Sterility. 2007, Vol. 88, No. 6, p1562-1567)
Source: "Color Atlas Cervical and Hysteroscopy Practice" Hideyo Takashima