ABSTRACT
BACKGROUND: Human papillomavirus (HPV) is a primary risk factor for cervical cancer. HPV 16 and 18 are the two most carcinogenic genotypes and have been reported in the majority of cervical cancer. High-risk HPVs (hrHPVs) other than HPV 16/18 cause approximately a quarter of cervical cancers. We aimed to present the colposcopy-guided biopsy results of non-16/18 hrHPV-infected women with negative cytology. METHODS: This is a retrospective cohort study conducted on 752 patients between the ages of 30-65 years with non-16/18 hrHPV and negative cytology undergoing colposcopy-guided biopsy at a tertiary gynecological cancer center between January-2016 and January-2019. RESULTS: The mean age of the women was 42.35±9.41 years. Cervical intraepithelial neoplasia (CIN) 2+ lesion was detected in 49 (6.5%) women with negative cytology. The rate of CIN 2+ lesions in women with abnormal cytology was 12.8%. Patients with abnormal cytology had about 2.1 and 2.4 times increased the odds of CIN 2+ lesion in cervical biopsy and endocervical curettage specimens, respectively. CIN 3+ lesion was detected in 20 (2.7%) women with negative cytology. One (0.1%) of the patients with HPV 39 and negative cytology had invasive cervical cancer. The two most common HPV subtypes were HPV 31 and HPV 51. CONCLUSIONS: The risk of cervical preinvasive lesions still can be detected and cannot be completely eliminated among hrHPV other than 16/18-infected women with negative cytology. Based on the results of this study, referral of non-16/18 hrHPV-infected women with negative cytology to colposcopy is supported as a credible and feasible strategy.