Table 4.

Characteristics of the lymph nodes representing occult N2 disease

Patient	N stage on PET/CT	Nodal station	Size of the LN (cm)		Cytology	Tumor
			CT	EBUS		Lobe/situation	Size in cm
N2 disease found on surgery (False negative of EBUS)
1	N0	5	0.76	NA	NA	LUL/central	0.9
2	N0	3A	0.61	NA	NA	RLL/central	1.8
		9	0.96	NA	NA
3	N0	5	0.61	NA	NA	LUL/central	3.8
		4L	0.96	Not seen	Not sampled
4	N0	5	0.86	NA	NA	LUL/central	3.7
5	N0	5	0.48	NA	NA	LLL/peripheral	2.5
		6	0.55	NA	NA
6	N0	7	0.3	0.38	Not sampled	LLL/peripheral	2.3
7	N0	7	0.59	0.67	Lymphocytes	RUL/peripheral	1.7
8	N0	4R	0.43	0.42	Not sampled	RLL/central	4.5
9	N1	7	0.9	1.30	Lymphocytes	RLL/peripheral	6.0
N2 disease found on EBUS
10	N0	4L	0.82	0.66	Malignancy	LLL/peripheral	6.8
11	N1	4L	0.3	0.3	Malignancy	LUL/central	3.5
12	N1	4L	0.65	0.65	Malignancy	LUL/peripheral	3.0
13	N1	4R	0.65	0.6	Malignancy	RUL/peripheral	3.6
14	N0	4L	0.74	0.54	Malignancy	LUL/peripheral	2.8
		7	0.95	0.99	Malignancy
15	N1	4R	0.54	0.84	Malignancy	RUL/peripheral	3.8