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Pleural fluid analysis in malignant mesothelioma. Prognostic implications
A Gottehrer1, D A Taryle, C E Reed
1Division of Pulmonary and Critical Care Medicine, Medical University of South Carolina, Charleston 29705.
Chest
|October 1, 1991
Summary
Low pleural fluid pH and glucose ratios in malignant mesothelioma indicate poorer survival. These markers, particularly pH, are significantly lower in mesothelioma effusions compared to other cancers, suggesting negative prognostic value.
Area of Science:
- Oncology
- Pulmonology
- Biomarkers
Background:
- Malignant mesothelioma is a rare but aggressive cancer.
- Pleural effusions are common in thoracic malignancies.
- Predictive markers for survival in malignant mesothelioma are crucial.
Purpose of the Study:
- To analyze pleural fluid characteristics in malignant mesothelioma.
- To compare these characteristics with other malignant effusions.
- To identify pleural fluid markers correlating with survival in malignant mesothelioma.
Main Methods:
- Retrospective review of 26 malignant mesothelioma patients over 18 years.
- Comparison of pleural fluid parameters (pH, glucose, protein, LDH) with other malignant effusions.
- Correlation analysis between pleural fluid markers and patient survival post-thoracentesis.
Main Results:
- Survival correlated with pleural pH and pleural fluid/serum glucose ratio, not protein or LDH.
- Decreased pleural fluid pH (<7.30) was linked to reduced survival and lower glucose ratios.
- Malignant mesothelioma effusions showed significantly lower mean pleural fluid pH than other malignant effusions.
Conclusions:
- Low pleural fluid pH and pleural fluid/serum glucose ratios are negative prognostic indicators in malignant mesothelioma.
- These markers may reflect tumor burden on the pleural surface.
- Pleural fluid pH is a valuable prognostic biomarker in malignant mesothelioma.