The correlation between high-risk HPV infection and precancerous lesions and cervical cancer

Objective: To analyze the correlation between high-risk human papillomavirus (HPV) infection and precancerous lesions and cervical cancer. Methods: Patients with cervicitis (N=100), cervical intraepithelial neoplasia grade I (CIN I) (N=100), cervical intraepithelial neoplasia grades II-III (CIN II-III) (N=100) and cervical cancer (N=100) were enrolled. The exfoliated cervical cells were collected with the same method, and the detection of the HPV types was carried out by PCR-reverse dot blot (RDB) assay. Results: The top 5 HPV types in stage I-II cervical cancer were 16, 18, 52, 58, and 53, with a HPV positivity rate of 83.61%, while top 5 HPV types in stage III-IV cervical cancer were 16, 18, 58, 52, and 33, with a HPV positivity rate of 82.05%. The rate of high-risk HPV positivity for cervicitis was 5%, with HPV types of 16, 18, 52, and 33, 12% for CIN I, with HPV types of 16, 58, 52, 33, 56, 66, and 68, and 42% for CIN II-III, with HPV types of 16, 18, 58, 52, 33, 66, and 68. The prevalence of single, dual, and multiple HPV infection was 8.00%, 1.00%, and 0.00% for CIN I, 24.00%, 7.00%, and 1.00% for CIN II-III, and 57.00%, 25.00%, and 3.00% for cervical cancer, respectively. The age of patients with CIN I was mainly <= 24 and 25-34 years while CIN II-III in 25-34 and 35-44 years, and cervical cancer in 35-44 and 45-54 years. Conclusion: The distribution of HPV subtypes in cervical cancer is closely related to the pathological types, lesion grades, and stages of cervical cancer. The incidence of cervical lesions varies with age, suggesting that high-risk groups should be well monitored and receive regular screening and timely HPV vaccination to effectively prevent cervical cancer.