A patient has malignant mesothelioma related to chronic asbestos exposure. What would his pleural effusion fluid likely show on laboratory analysis?
1. Erythrocytes
2. Lymphocytes
3. Normal mesothelial cells
4. Malignant mesothelial cells
a. 1, 4
b. 2, 3
c. 2, 3, 4
d. 1, 2, 3, 4
C
Asbestos is known to cause mesothelioma, a cancer of the mesothelial cells lining the lungs and chest wall (the visceral and parietal pleura). The pleural effusion fluid, in this case, will show a mix of normal and abnormal mesothelial cells and lymphocytes.
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