Which of the following pathologies is the most common cause of pleural effusions in clinical practice?
a. Hepatic disease
b. Acute renal failure
c. Congestive heart failure
d. Cor pulmonale
ANS: C
CHF is the most common cause of pleural effusions in clinical practice. The effusions can be massive, filling the entire hemithorax and compressing the lung. More commonly, they are small and bilateral.
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