title: AutoCyte Prep system vs. conventional cervical cytology. Comparison based on 2,156 cases.
abstract: OBJECTIVE
  To compare the AutoCyte Prep system (Burlington, North Carolina) with conventional cervical cytology in a university medical center laboratory.
  
  
  METHODS
  Split-sample conventional and AutoCyte Preps were examined for 2,156 cases. Same-patient conventional and Prep slides were submitted to separate cytotechnologists blindly. The results were compared on review by a cytopathologist. The Prep slides were subsequently scanned on the AutoCyte Screen automated interactive system, with manual review of the flagged cases. The results were compared with anatomic pathology follow-up when available.
  
  
  RESULTS
  Of the 158 squamous intraepithelial lesions (SILs) found by both methods, 78% were found by AutoCyte Prep, while 59% were found by conventional smear (P < .01). Among the discordant cases, thin-layer slides revealed 88% more LSIL lesions (P < .05), a comparable number of high grade SIL lesions and a single case of adenocarcinoma that was ambiguous on the conventional slide. The addition of AutoCyte assisted primary screening demonstrated a net benefit, recovering additional cases referenced as atypical glandular cells of undetermined significance and as high grade SIL.
  
  
  CONCLUSIONS
  The AutoCyte Prep system affords excellent cellular presentations and superior sensitivity for SILs when compared to the conventional technique. The use of AutoCyte Screen, for primary screening demonstrated performance equivalent to manual screening, with a significant improvement in sensitivity when measured against biopsy results.
authors.affiliation: Department of Pathology, Creighton University Medical Center, Omaha, Nebraska, USA.
authors.forename: L
authors.initials: L
authors.lastname: Minge
authors.forename: M
authors.initials: M
authors.lastname: Fleming
authors.forename: T
authors.initials: T
authors.lastname: VanGeem
authors.forename: J W
authors.initials: JW
authors.lastname: Bishop
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000473:pathology; D000293:Adolescent; D000328:Adult; D001331:Automation; D005260:Female; D006801:Humans; D008403:Mass Screening; D008875:Middle Aged; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D002583:Uterine Cervical Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014626:Vaginal Smears; D002578:Uterine Cervical Dysplasia / Q000175:diagnosis* / Q000473:pathology