Table 1:

Clinical and pathological characteristics in patients with malignant pleural disease or M1b disease

		MPE		MPN		M1b		p-Value
		n	%	n	%	n	%
Number		32		41		25
Age (y)	Mean	63.7	(SD 9.6)	62.4	(SD 10.9)	61.5	(SD 12.5)	0.51
Gender	Male	9	28.1	19	46.3	21	84	0.0001
	Female	23	71.9	22	53.7	4	16
Histology	Adenocarcinoma	29	90.6	33	80.5	16	64	0.096
	Squamous cell	3	9.4	5	12.2	6	24
	Large cell	0	0	1	2.4	2	8
	Adenosquamous	0	0	2	4.9	1	4
Tumor size	<3 cm	16	50	21	51.2	8	32	0.1
	>3 cm	16	50	20	48.8	17	68
Nodal status	N0	11	34.4	14	34.1	7	28	0.12
	N1	3	9.4	6	14.6	1	4
	N2	16	50	19	46.3	12	48
	N3	2	6.3	2	4.9	5	20
Procedure	Partial resection	2	6.3	6	14.6	1	4	0.46
	Lobectomy	26	81.3	29	70.7	18	72
	Bilobectomy	3	9.4	4	9.8	4	16
	Pneumonectomy	1	3.1	2	4.9	2	8

MPE = malignant pleural effusion without nodules; MPN = malignant pleural nodules with or without effusion.