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9271 Surgery

A 64-year-old woman is found to have a left- sided pleural effusion on chest x-ray. Analysis of the pleural fluid reveals a ratio of concentration of total protein in pleural fluid to serum of 0.38, a lactate dehydrogenase (LDH) level of 125 IU, and a ratio of LDH concentration in pleural fluid to serum of 0.46. Which of the following disorders is most likely in this patient?

AUremia
BCongestive hea failure
CPulmonary embolism
DSarcoidosis
Surgery
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