Characteristics of Pleural Fluid in Patients Undergoing Thoracenteses (N=11) n (%)
Unilateral 9 (82)
Bilateral 2 (18)
Etiologies of pleural effusion  
Malignancy 2 (18)
Congestive heart failure (CHF) 1 (9)
Malnutrition 1 (9)
Hepatic hydrothorax 1 (9)
Multiple etiologies* 4 (37)
 Pericarditis 1 (9)
Unknown 1 (9)
*Multiple etiologies included a combination of CHF/Kidney failure, CHF/Kidney failure/Pneumonia, CHF/Rib Fracture, Liver failure/Pneumonia
Table 2: Characteristics of Pleural Fluid in Patients Undergoing Thoracenteses (N=11).