宫颈癌是发生于子宫颈上的恶性肿瘤,发病率在女性生殖系统的癌瘤中占首位,其严重威胁着妇女的生命与健康。如何降低宫颈癌的发生,其关键是认识宫颈癌前病变的发生发展过程,从而做到早发现、早诊断、早治疗。宫颈上皮内瘤变(CIN),它包括宫颈非典型增生及原位癌。CIN是宫颈浸润癌 Cervical cancer is a malignant tumor that occurs on the cervix. The incidence of cervical cancer is the highest among cancers of the female reproductive system, which seriously threatens the life and health of women. How to reduce the occurrence of cervical cancer, the key is to understand the occurrence and development of cervical precancerous lesions in order to achieve early detection, early diagnosis and early treatment. Cervical intraepithelial neoplasia (CIN), which includes cervical dysplasia and carcinoma in situ. CIN is invasive cervical cancer