NCT05693727 2023-01-23Cancer Ratio,Pleural Fluid Adenosine Deaminase,Lactate Dehydrogenase, interferonY, Tumor Necrosis Factor,and Interleukins{2,12,18}for Differentiation Between Malignant and Non Malignant Pleural EffusionAssiut UniversityNot yet recruiting100 enrolled