Table 2

The incidence of bone marrow and pleural tumour cell dissemination in relation to the post surgical stage of the tumour

	Total assessed	Positive bone marrow aspirates	p Value	Positive pleural lavages	p Value
Results of assessment of bone marrow aspirates and pleural lavages for tumour cell dissemination in the 42 patients enrolled.
*χ² test; †T1 v T2.
T1	8	5	0.172†	2	0.414†
T2	33	12		5
T3	1	1
N0	25	12	0.711*	2	0.109*
N1	6	2		1
N2	11	4		4
Stage 1	24	11	0.871*	2	0.116*
Stage 2	7	3		1
Stage 3	11	4		4