Table 2.

Concentration of TuM2-PK and CEA in serum and pleural effusion and P/S ratio in BPE and MPE

Marker	MPE	BPE	P value
TuM2-PK (µ/ml)
Pleural effusion	56.38 ± 18.51	13.51 ± 1.65	0.001
Serum	33.25 ± 11.71	9.67 ± 2.87	0.001
P/S	1.79 ± 1.03	1.45 ± 0.46	0.034
CEA (ng/ml)
Pleural effusion	37.28 ± 14.03	4.83 ± 0.48	0.001
Serum	21.57 ± 5.54	4.46 ± 0.63	0.001
P/S	1.78 ± 1.16	1.07 ± 0.08	0.021

MPE: malignant pleural effusion; BPE: benign pleural effusion