Performance of the DNA-citoliq liquid-based cytology system compared with conventional smears

To evaluate the performance of a new, manual, simplified liquid-based system, DNA-Citoliq (Digene Brasil), employed under routine conditions as compared to conventional smears collected from six collaborating private laboratories. Methods: A panel of cytopathologists, who served as the gold standard diagnosis, adjudicated discordant opinions. Results: Of 3206 pairs of slides considered valid for comparison, there were 3008 in full agreement (93.8%), 112 (3.5%) with one diagnostic category discrepancies, and 86 (2.7%) discordant cases. Among the 288 borderline+ by either method, DNA-Citoliq detected abnormalities in 243 (84.4%), and conventional smears (CS) detected abnormalities in 178 (61.8%) (McNemar test, P < 0.000), a 36.5% increased detection of borderline+ cases. Conclusions: For mild dyskaryosis, DNA-Citoliq detected 176 cases and CS 125 cases (McNemar test, P < 0.000); and for moderate+severe dyskaryosis 66 versus 32 cases respectively (McNemar test, P < 0.000)

Cervical Cancer Screening with Liquid Cytology in Women with Developmental Disabilities

Abstract Objective: To evaluate the use of liquid cytology in Pap smears in women with developmental disabilities (DD) for endocervical cell yield and abnormalities, via speculum examination or blind technique. Methods: We used retrospective chart review of gynecological visits by women with DD from October 2002 to November 2005. Cervical cytology screening included speculum examination or blind technique. Endocervical cell yield was analyzed via Pearson's chi-square test. Results: Of 240 attempted liquid cytology Pap smears, 199 (82.9%) were completed. Of these, 193 met inclusion criteria for the study, and 120 (62.2%) contained endocervical cells. The endocervical cell yield with liquid cytology/speculum was 80.0% and was 43.6% with liquid cytology/blind (p < 0.001). Two blind smears (1.0%) were abnormal; both revealed atypical squamous cells of undetermined significance (ASCUS) with subsequent negative human papillomavirus (HPV) typing. Conclusions: Cervical screening with liquid cytology in women with DD provides an overall rate of endocervical cells of approximately 44%-80% depending on the technique used. Although this is much lower than in the general population, this compares favorably with slide Pap smear in women with DD. The 44% yield of endocervical cells and the finding of abnormal Pap smears with the blind technique suggest this is a reasonable alternative for obtaining Pap smears in women with difficult pelvic examinations who otherwise would not receive cervical screening.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/78111/1/jwh.2008.0795.pd