Comparison of performance of liquid-based versus conventional cytology in brazilian public health system of th
Keywords:
Cytodiagnosis, Vaginal smear., Screening programs., Conventional cytology.Abstract
The main goal was to evaluate the performance of liquid-based cytology (LBC) versus conventional cytology (CC) of cervical smears tests performed in Unified Health System (SUS) of Vale do Ribeira, São Paulo, Brazil. It is a comparative study between CC historical data (31,500) and prospective samples of LBC (9,764). All samples followed the internal quality control criteria of the Cytology Laboratory at Adolfo Lutz Institute (CL-IAL). LBC was performed using BD Sure Path recommendations. The Z-test was used with a 5% significance for comparison of proportions (p < 0.05). The smears were diagnosed as positive in 7.80% of cases by CC technique and 11.57% for LBC, with a significant difference in cases of atypical squamous cells of undetermined significance - ASC-US (4.52% to 6.98%), low-grade squamous intraepithelial lesion -LSIL (1.82% to 3.48%) and atypical glandular cells - AGC (0.54% to 0.26%). Statistical difference in the percentage of unsatisfactory samples (3.50% to 0.25%) was observed. LBC technique reduces artifacts of preparation and assessment of samples, resulting in reduction of unsatisfactory samples while increases the percentage of positives. We conclude that the implementation of LBC in the SUS is feasible due to the standardization and improvement of the quality of the samples.
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Copyright (c) 2015 Daniela Etlinger-Colonelli, Sonia Maria Pereira de Oliveira, Monique Camila Basso, Silvia D’Andretta Iglezias, Luzia Setuko Umeda Yamamoto, Yuriko Ito Sakai, Julia de Carvalho, Camilo Lelis Feres, Rosemeire Oliveira Lima Rodrigues, Celso di Loreto
This work is licensed under a Creative Commons Attribution 4.0 International License.
