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USMLE · Question #598
USMLE Question #598: Real Exam Question with Answer & Explanation
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Question
A 61-year-old male is admitted to the hospital with worsening shortness of breath and fatigue. Physical examination reveals dullness to percussion and decreased breath sounds in the right lung. A chest x-ray is obtained which reveals a large right-sided pleural effusion. Thoracentesis yields 250 mL of fluid with a pleural fluid protein/serum protein ratio of 0.7 and a lactate dehydrogenase level of 240 U/L. The most likely diagnosis is:
Options
- Abacterial pleuritis
- Bcirrhosis of the liver
- Ccongestive heart failure
- Dnephrotic syndrome
- Eprotein losing enteropathy
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