Table 2.

Strategy for tumor location-specific selective nodal dissection in N2 non-small cell lung cancer (NSCLC) patients: distribution of upper mediastinal involvement according to clinical T status

Tumor location
	RUL	RLL	LUD	LLD	LLL
	n (%)
No. of patients with N2	79 (100)	40 (100)	41 (100)	11 (100)	24 (100)
No. of patients with UMI	76 (96)	24 (60)	41 (100)	9 (82)	10 (42)
Patients with UMI
HI (–), SCI (–), LMI (–)	44 (56)	9 (23)	22 (54)	5 (45)	2 (8)
Clinical T1	14 (18)	1 (4)	5 (12)	2 (18)	1 (4)
Clinical T2–4	30 (38)	8 (21)	17 (41)	3 (27)	1 (4)

RUL right upper lobe, RLL right lower lobe, LUD left upper division, LLD left lingular division, LLL left lower lobe, UMI upper mediastinal involvement, HI hilar lymph node involvement, SCI subcarinal involvement, LMI lower mediastinal involvement