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Isolation and Quantitative Evaluation of Brush Cells from Mouse Tracheas
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Biliary Brush Cytology Revisited.

Shafqat Mehmood1, Asif Loya, Muhammed Aasim Yusuf

  • 1Department of Internal Medicine, Shaukat Khanum Memorial Cancer Hospital and Research Center Lahore, Lahore, Pakistan.

Acta Cytologica
|May 26, 2016
PubMed
Summary

Biliary brush cytology is a safe and effective initial diagnostic tool for biliary strictures, offering a good diagnostic yield and sensitivity when performed correctly. This technique should be utilized more frequently in clinical practice.

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Area of Science:

  • Gastroenterology
  • Cytopathology
  • Oncology

Background:

  • Biliary strictures are a common clinical challenge requiring accurate diagnosis.
  • Endoscopic retrograde cholangiopancreatography (ERCP) with biliary brush cytology is a minimally invasive diagnostic procedure.
  • Evaluating the diagnostic performance of biliary brush cytology is crucial for patient management.

Purpose of the Study:

  • To assess the diagnostic yield of biliary brush cytology in patients with biliary strictures.
  • To identify factors influencing the positive results of biliary brush cytology.
  • To determine the accuracy of biliary brush cytology in diagnosing biliary strictures.

Main Methods:

  • Retrospective review of 142 patients undergoing ERCP with biliary brush cytology from 2004-2013.
  • Analysis of factors including stricture location, age, gender, and CA 19.9 levels.
  • Comparison with final histopathology and other diagnostic methods for true/false positive/negative results.

Main Results:

  • The overall diagnostic yield of biliary brush cytology was 58.5%, increasing to 65.5% when including atypical cells.
  • Higher diagnostic yield was observed for proximal (67%) versus distal (50%) common bile duct strictures (p=0.047).
  • Sensitivity, specificity, and positive predictive value were 65.3%, 100%, and 100%, respectively, with a negative predictive value of 27%.

Conclusions:

  • Biliary brush cytology is a safe and simple initial diagnostic procedure for biliary strictures, performable during therapeutic ERCP.
  • When performed correctly and interpreted by a dedicated cytopathologist, it demonstrates good diagnostic yield and sensitivity.
  • The study recommends revisiting and increasing the utilization of this technique, challenging perceptions of its limited usefulness.