When CEH occured in the endometrial gland in closed-cervix cases, pathological changes such as spuamous metaplasia and adenomatoid lesion were found in the epithelium of endometrium.

• 闭锁型多表现子宫内膜萎缩，子宫壁极薄，子宫内膜腺体发生CEH时，其上皮表现鳞状化生和腺瘤样病变。