To determine rates of and factors associated with cervical intraepithelial neoplasia (CIN) 2 or 3 among women with atypical squamous cells of undetermined significance (ASC-US) and oncogenic human papillomavirus (HPV) infection.
Materials and Methods.
This is a retrospective review of 357 women with ASC-US and known high-risk HPV infection. To be eligible for inclusion, patients had to have subsequently undergone colposcopic-directed cervical biopsy and/or endocervical sampling. Univariate and multivariable regression analyses were used to estimate crude and adjusted odds ratios of CIN 2 or 3 by risk factors associated with HPV and CIN.
Thirty-three of 215 (15%) women with ASC-US and oncogenic HPV who underwent histological sampling demonstrated CIN 2 or 3. In the adjusted model, only nulliparity (adjusted odds ratio = 2.2, 95% CI = 1.0-4.8) retained a marginal association with the outcome. No significant age-related differences in the prevalence of high-grade disease emerged. The high-grade lesions seen in adolescents consisted of single, small lesions.
In the light of these findings, and in conjunction with the high rate of oncogenic HPV infection among adolescents with ASC-US, both reflex HPV testing and immediate colposcopy do not appear to be of benefit in the initial management of teenagers with this cytological diagnosis.