子宫内膜增生的发生机制是长期受无孕激素对抗的雌激素刺激作用而发生的子宫内膜增生 ,它具有一定的癌变倾向 ,故被列为癌前病变 ,但根据长期观察 ,绝大多数子宫内膜增生是一种可逆性病变 ,或保持一种持续性良性状态。仅有少数病例在较长的时间间隔以后 ,可能发展成为癌。1　子 The mechanism of endometrial hyperplasia is endometrial hyperplasia which is caused by long-term estrogen stimulating effect without hormone prolactin. It has certain tendency of carcinogenesis and is therefore classified as a precancerous lesion. However, according to long-term observation, the vast majority of endometrial hyperplasia Endometrial hyperplasia is a reversible disease, or maintain a persistent benign state. Only a few cases may develop into cancers after a long period of time. 1 child