Cervical lesions refer to cervical intraepithelial lesions, which are generally divided into low-level and high-level lesions. 1. High grade lesions are precancerous lesions. The occurrence of the lesions is closely related to the persistent infection of high-risk HPV. The lesions tend to occur in the transitional areas of uterine squamous and columnar epithelium. Histological diagnosis is the basis for diagnosis and grading. 2. Low grade lesions refer to proliferation of squamous epithelial basal parabasal like cells, nuclear polarity disorder, mild atypia, rare mitotic figures of the nucleus, limited to the lower 1/3 of the epithelium. A high degree of pathological changes is the disorder of the polarity of the nucleus, the increase of the proportion of nucleoplasm, the increase of mitotic figures, and the expansion of heterotypic cells to the lower 2/3 of the epithelium or even the whole process. It is generally associated with persistent infection of HPV types 16 and 18. Cervical lesions, generally without special symptoms, occasionally with increased vaginal discharge or without odor. The cervical cytology and HPV examination, as well as colposcopy and cervical biopsy can be used to determine whether there is any pathological change.
