The Feasibility Study of the Li Brush for the Screening of Endometrial Cancer in the Postmenopausal Period

Investigators screen the suitable participants according to the inclusion and exclusion standards, and then collect their endometrial sampling with Li Brush. Pathologists will help to decide the cytology obtained by Li Brush and histology diagnosis of the endometrial sampling. Comparing the pathological diagnosis results of cytology and histology, investigators want to prove the feasibility of cytology diagnosis of endometrial cancer in the postmenopausal period, as the same time, investigators intend to evaluate the possible factors that affecting the precision of Li Brush for endometrial cancer in the postmenopausal period.