Knowledge of Patients' Human Papillomavirus Status at the Time of Cytologic Review Significantly Affects the Performance of Cervical Cytology in the ATHENA Study

Am J Clin Pathol. 2016 Sep;146(3):391-8. doi: 10.1093/ajcp/aqw125.

Abstract

Objectives: With human papillomavirus (HPV) testing, patients' HPV status may be known when reviewing cytology specimens.

Methods: 41,955 women 25 years or older had cytology and HPV screening. Originally, cytology was reviewed blinded to HPV status. We re-reviewed unblinded to HPV status a subset of 428 cytology slides from women with cervical intraepithelial neoplasia grade 2 + (CIN2+) and 1,287 from women without CIN2+.

Results: Of the original interpretations of atypical squamous cells of undetermined significance (ASC-US), 33.7% were downgraded to negative after unblinded review, and 8.7% were upgraded to atypical squamous cells, cannot rule out a high-grade squamous intraepithelial lesion or high-grade squamous intraepithelial lesion. Of the original interpretations of ASC-US, 66.7% were downgraded on unblinded review in HPV-negative women and 30.2% were upgraded in HPV 16+/HPV 18+ women. Unblinding increases the sensitivity for cervical intraepithelial neoplasia grade 3+ of cotesting from 54.1% to 62.4% (P = .0015) and the sensitivity of HPV primary screening from 72.2% to 77.1% (P = .0029). With cotesting, specificity with unblinding is improved, whereas with HPV primary screening, there would be a small decrease in specificity.

Conclusions: Unblinded cytology increases overall sensitivity with either cotesting or HPV primary screening; specificity is either slightly improved or is not affected by unblinding.

Keywords: Cervical cancer; Cervical cytology; HPV; Screening.

MeSH terms

  • Adult
  • Cervical Intraepithelial Neoplasia / diagnosis*
  • Cervical Intraepithelial Neoplasia / pathology
  • Cervical Intraepithelial Neoplasia / virology
  • Colposcopy
  • Cytodiagnosis*
  • Early Detection of Cancer*
  • Female
  • Humans
  • Middle Aged
  • Papillomaviridae / isolation & purification*
  • Papillomavirus Infections / diagnosis*
  • Sensitivity and Specificity
  • Uterine Cervical Neoplasms / diagnosis*
  • Uterine Cervical Neoplasms / pathology
  • Uterine Cervical Neoplasms / virology
  • Vaginal Smears
  • Young Adult