Table 5. Tissue diagnosis and Felson’s mediastinal compartments.

Felson mediastinal compartmets
			Anterior	Middle	Posterior	Total
Tissue diagnosis	Thymoma	Count	14	0	0	14
		%within compartment	35,0%	0,0%	0,0%	31,1%
		% within total	31,1%	0,0%	0,0%	31,1%
	Lymphoma	Count	6	2	0	8
		%within compartment	15,0%	50,0%	0,0%	17,8%
		% within total	13,3%	4,4%	0,0%	17,8%
	Carcinoma (primary and metastasis)	Count	11	0	0	11
		%within compartment	27,5%	0,0%	0,0%	24,4%
		% within total	24,4%	0,0%	0,0%	24,4%
	Other malignancy	Count	3	0	0	3
		%within compartment	7,5%	0,0%	0,0%	6,7%
		% within total	6,7%	0,0%	0,0%	6,7%
	Benign	Count	6	2	1	9
		%within compartment	15,0%	50,0%	100,0%	20,0%
		% within total	13,3%	4,4%	2,2%	20,0%
Total		Count	40	4	1	45
		%within compartment	100,0%	100,0%	100,0%	100,0%
		% within total	88,9%	8,9%	2,2%	100,0%