Pleural effusion in rheumatoid ahritis is typically associated with all of the following features except?
Since Rheumatoid ahritis is an inflammatory disease, the rheumatoid effusion is an exudate and is known to have glucose of less than 60mg/dL. Malignancy and bacterial infections (empyema) can also present with low pleural fluid sugar.
Glucose > 620 mg/dl
Protein> 3 gm/dl
Pleural fluid protein to serum protein ratio of > 0.5
Pleural fluid LDH to serum LDH ratio of >0.6
Pleural effusion & Pulmonary alveolar proteinosis