Table 5. Survival in terms of pleural invasion size.

	n	Survival		Median survival (months)	p
		n	%	n
Pleural invasion size (mm)
1-10	63	39	61.9	63	0.842
11-19	63	37	58.7	52
>20	38	21	55.3	45
Total	164	97	59.1	52
The area tumour is invaded to pleura in millimeters under the microscope and grouped as 1-10 mm, 11-19 mm and 20 mm and above.