Methods 108 cases of cervical intraepithelial neoplasia (C1N) including 73 cases of precancerous lesion, 35 cases of carcinoma in situ were investigated.

• 方法收集108例子宫颈上皮内瘤样病变，其中癌前病变73例，原位癌35例，通过临床随访和光镜下的特点进行观察和分级。