The Importance of High-Risk Human Papillomavirus Types Other Than 16 and 18 in Cervical Neoplasia

Archives of Pathology & Laboratory Medicine
Ibrahim A RobadiBarbara S Ducatman

Abstract

- Types 16 and 18 are the most widely studied high-risk types of human papillomavirus (HPV). However, other high-risk HPV types (HPV non-16/18) also play a significant role in cervical neoplasia. Currently, screening and management algorithms separate out HPV 16/18 from all other HPV non-16/18 types. In addition, most of the previously vaccinated population has only been vaccinated for these high-risk types, so many women are still vulnerable to HPV non-16/18 infections. - To review the prevalence and role of HPV non-16/18 neoplasia and to review current surveillance, management, and vaccination strategies in view of these findings. - The study comprised a review of the literature. - Although HPV non-16/18 types are less frequently associated with cervical intraepithelial neoplasia and cancer, they are nonetheless a significant cause of disease. Further stratification of higher-risk HPV non-16/18 may be necessary to improve prevention and management, however, regional prevalence differences may make a unified approach difficult. As HPV 16/18 infections decrease owing to vaccination of at-risk women, the relative frequency of HPV non-16/18 will increase, although the latest vaccine covers several more high-risk types.

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