The International System for Reporting Serous Fluid Cytopathology: A Systematic Review and Meta-Analysis of Diagnostic Test Accuracy Studies

Autores da FMUP

• 

  Fernando Carlos De Landér Schmitt

  Autor

Participantes de fora da FMUP

• Jamal F.E.
• Vey J.A.
• Proctor T.
• Ishak A.
• Nikas I.P.

Unidades de investigação

• Laboratório Associado RISE- Rede de Investigação em Saúde

  

  Investigador

  Fernando Carlos De Landér Schmitt

• Patologia

• RISE-Health

  

  Investigador

  Fernando Carlos De Landér Schmitt

Abstract

This is the first systematic review and meta-analysis of The International System (TIS) for reporting serous fluid cytopathology. Our aims were to present the pooled malignancy rate of each TIS reporting category and the diagnostic accuracy of cytology using this system. Database search using a predefined strategy was followed by study selection, data extraction, study quality assessment, and statistical analysis. Data derived from 16 eligible studies were pooled. The pooled rates of malignancy were as follows: 27% (95% CI; 16%-41%) for "nondiagnostic"(ND), 11% (95% CI; 7%-18%) for negative for malignancy"(NFM), 49% (95% CI; 37%-61%) for "atypia of undetermined significance"(AUS), 90% (95% CI; 81%-95%) for "suspicious for malignancy"(SFM), and 100% (95% CI; 98%-100%) for "positive for malignancy"(MAL). Studies performed exclusively in cancer hospitals showed higher pooled malignancy rates, compared with academic and community hospitals serving the general population, in the ND [40% (95% CI; 21%-62%) vs. 22% (95% CI; 11%-39%)], NFM [20% (95% CI; 13%-30%) vs. 9% (95% CI; 5%-17%)], and AUS categories [55% (95% CI; 47%-63%) vs. 46% (95% CI; 31%-62%)]. Notably, the difference was significant in the NFM category (P=0.04). When both SFM and MAL cytology interpretations were considered as malignant outcomes, the pooled sensitivity and specificity were 68.74% (95% CI; 59.90%-76.39%) and 98.81% (95% CI; 98.18%-99.22%), respectively. In addition, the diagnostic odds ratio (DOR) was found to be 170.7 (95% CI; 96.2-303.3). Despite its strengths, our study also had some limitations. Therefore, future large-scale longitudinal studies could strengthen the findings of this review. © 2024 Wolters Kluwer Health, Inc. All rights reserved.

Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.

Keywords

• Cytodiagnosis; Cytology; Humans; Neoplasms; algorithm; body fluid; controlled study; cytology; cytopathology; data extraction; diagnostic accuracy; diagnostic test accuracy study; follow up; human; immunochemistry; meta analysis; pleura fluid; quality control; receiver operating characteristic; Review; sensitivity and specificity; serous fluid; systematic review; cytodiagnosis; diagnosis; neoplasm; pathology; procedures