Abstract
Many women having cervicovaginal smears interpreted as atypical squamous cells of undetermined significance (ASCUS) ultimately prove to harbor squamous intraepithelial lesions (SIL). The question is whether rare cells diagnostic of SIL are present in so-called "atypical" smears, but simply go undetected. To test whether the PAPNET Cytological Screening System, an automated system, can detect the (assumed) presence of such cells, six reviewers independently evaluated PAPNET video images generated for 101 cases conventionally diagnosed as ASCUS. Using PAPNET-identified microscopic coordinates, selected cases were then manually reviewed and reclassified according to consensus opinion. Overall, 35 cases were reclassified as SIL (22 low grade; 13 high grade). Histologic correlations showed 37 of the 101 cases conventionally interpreted as ASCUS carried tissue diagnoses of SIL, (28 low grade; 8 high grade, 1 ungraded). Using PAPNET, 24 of the 37 (65%) corresponding smears were reclassified as SIL (15 low grades; 9 high grade).
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