Journal
AMERICAN JOURNAL OF CLINICAL PATHOLOGY
Volume 132, Issue 5, Pages 767-775Publisher
OXFORD UNIV PRESS INC
DOI: 10.1309/AJCP8VE7AWBZCVQT
Keywords
Cervical cytology; Computer-assisted screening; Cytology imaging system
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Location-guided screening in cervical cytology offers a potentially significant advance over routine manual screening. A prospective, 2-armed, masked clinical trial of the BD FocalPoint GS Imaging System using SurePath slides (BD Diagnostics-TriPath, Burlington, NC) compared routine manual screening and quality control rescreening with computer-assisted, field-of-view screening and device-directed quality control rescreening. The results obtained in the 2 arms were compared with adjudicated reference diagnoses for each slide. Sensitivity, specificity, and negative predictive value were calculated for the detection of atypical squamous cells of undetermined significance and greater (ASC-US+), low-grade squamous intraepithelial lesion and greater (LSIL+), and high-grade squamous intraepithelial lesion and greater (HSIL+) groups. We evaluated 12,313 slides. The detection sensitivities for HSIL+ were increased by 19.6% (P < .0001) and for LSIL+ were increased by 9.8% (P < .0001) in the computer assisted arm, with small statistically significant decreases in specificity. For ASC-US+ sensitivity and specificity, the study arms were not statistically cl fferent. Use of this system might be expected to improve accuracy for clinically important entities without increasing equivocal case detection.
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