What is the relevance of mesothelial cells found during the workup for pleural effusions (fluid on the lungs)?

Updated: Oct 15, 2021
  • Author: Kamran Boka, MD, MS; Chief Editor: Guy W Soo Hoo, MD, MPH  more...
  • Print

Mesothelial cells are found in variable numbers in most effusions, but their presence at greater than 5% of total nucleated cells makes a diagnosis of TB less likely. Markedly increased numbers of mesothelial cells, especially in bloody or eosinophilic effusions, suggests pulmonary embolism as the cause of effusion.

Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!