Table 1. Biochemical and Cytology Analysis of Pleural Fluid^a.

Variable	Data
Appearance	Bloody
Protein, g/dl	4.6
LDH, U/L	205
Glucose, mg/dl	98
ADA, U/L	18
WBC, (PMN = 10%, MN = 90%), per mm 3	1040
RBC, per mm 3	16500
Cytology	Negative for malignancy

^aAbbreviations: ADA, Adenosine Deaminase; LDH, Lactate Dehydrogenase.