Objective: Cervical cytology specimens diagnosed with ASC-H consist of squamous cells with equivocal cytology for high-grade dysplastic lesions. We reviewed our cases of ASC-H with reflex HPV testing to evaluate this patient population. Study Design: We retrospectively identified patients with ASC-H in Pap smears over a 3-year period. Reflex high-risk (HR) HPV DNA testing was performed by request. Follow-up results and smear characteristics were evaluated. Results: HR HPV DNA testing was positive in 60 of 82 (73%) cases tested. The risk of high grade cervical intraepithelial neoplasia (CIN) on follow-up after a positive HPV test with ASC-H is 68.3%. The risk of high grade CIN after a negative HPV test with ASC-H is 58.3%. High grade CIN lesions were found in 20% HPV-negative patients. The cellularity of atypical cells in Pap smears was not helpful in analyzing differences in HPV-positive and HPV-negative ASC-H. Conclusion: The risk of high grade dysplasia after an ASC-H Pap diagnosis was high irrespective of the reflex HPV test results in our patient population. Therefore, our findings support the continued utilization of the current ASCCP guidelines of colposcopy and caution when utilizing reflex HR HPV testing in the colposcopy triage ASC-H patients.

Keywords:
Cervical intraepithelial neoplasia, Pap smear, HPV testing, Atypical squamous cells, cannot exclude high grade squamous intraepithelial lesion
© 2011 S. Karger AG, Basel
2011
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