High risk human papillomavirus in women with normal cervical cytology prior to the development of abnormal cytology and colposcopy

Objective To study the significance of the presence of high risk human papi llomavirus (HPV) in women with initially normal cervical cytology for the d evelopment of abnormal cytology and an abnormal colposcopic impression. Design Prospective, observational study Participants and methods Sixty-eight women with cytomorphologically normal smears and at least one positive HPV test result were evaluated every six m onths by cytology, colposcopy and HPV testing. The endpoint of the study wa s abnormal cervical cytology. Results The median time of follow up from the first positive HPV test was 3 4 months. A total of 17 women developed abnormal cytology, of whom 16 (94%) had persistence of a high risk HPV infection. Women with persistent high r isk HPV were more likely to develop abnormal cervical cytology than women w ithout high risk HPV (hazard ratio 28.2, 95% CI 3.72-215.2); they also had an increased risk of developing an abnormal colposcopic impression (hazard ratio 4.4, 95% CI 1.69-11.7). Among the 17 women with abnormal cytology, hi gh grade dysplasia was histopathologically demonstrated in eight women. Conclusion Persistent presence of high risk HPV in normal cervical smears i s associated with a significantly increased risk of developing abnormal cyt ology and to a lesser degree with developing an abnormal colposcopic impres sion.