Table 1. Baseline characteristics of lung cancer patients with CT-defined radiologically normal mediastinum.

Variables
Total patients, no. (men/women)	43 (25/18)
Median age, years	66
Lymph node size by CT, mm, mean (SD)
Short axis	6.8 (1.4)
Final diagnosis, no. (%)
Adenocarcinoma	29 (69)
Squamous cell carcinoma	4 (9.5)
Large cell carcinoma	1 (2.4)
Undetermined NSCLC	6 (14.3)
Small cell carcinoma	2 (4.8)
Location of lymph nodes targeted by EBUS-TBNA, no. (%)
Highest mediastinal (#1)	1 (1.3)
Right upper paratracheal (#2R)	3 (3.8)
Left upper paratracheal (#2L)	1 (1.3)
Right lower paratracheal (#4R)	20 (47.6)
Left lower paratracheal (#4L)	9 (21.4)
Subcarinal (#7)	23 (54.8)
Right hilar (#10R)	12 (28.6)
Left hilar (#10L)	5 (11.9)
Right interlobar (#11R)	2 (2.6)
Left interlobar (#11L)	2 (2.6)
Total	78 (100)

CT: computed tomography; NSCLC: non-small cell lung cancer; EBUS-TBNA: endobronchial ultrasound-guided transbronchial aspiration.