Table 3. Results: data on mediastinal lymphadenectomy.

Dissected mediastinal stations	VM + VMPR group	VMPR group	P
N2			<0.001
Mean	4.931.1	3.250.5
Median [range]	5 [4–8]	5 [3–8]
N1
10/11	Dissected in 100%	Dissected in 100%	1
12 other lobe	3/27 (11.1%)	3/119 (2.5%)	0.04
pN up-staging			0.74
cN0 to pN1/2	3 (11%)	16 (13.5%)
cN1 to pN2	–	–

VM, video-mediastinoscopy; VMPR, VATS major pulmonary resection.