Postmenopausal endometrial hyperplasia that requires treatment. Pathologic findings suggestive of endometrial hyperplasia are scraped for hysteroscopic curettage or not, and whether there is a possibility of missing more serious lesions. It is also necessary to identify whether there is exogenous estrogen intake and whether there is endogenous estrogen production. Emphasis needs to be placed on identifying the possibility of estrogen-producing ovarian tumors. If there is a family history of endometrial cancer, colorectal cancer, or other tumors, and if there are risk factors for endometrial cancer such as obesity, hypertension, or diabetes, the patient should be treated aggressively and followed up with close examination. Abnormal proliferation of the endometrium is a precancerous condition that requires timely surgery, and in severe cases, surgical removal of the uterus is also considered.