Table 1. Patient characteristics.

Characteristic	Value
Age	61±12
Men	19 (82.6%)
Women	4 (17.4%)
Surgical resection
Right pneumonectomy	3
Left pneumonectomy	2
Right upper lobectomy	5
Left upper lobectomy	6
Middle lobectomy	1
Right lower lobectomy	1
Left lower lobectomy	4
Inferior bilobectomy	1
Histology
Adenocarcinoma	12 (52.2%)
Squamous cell carcinoma	7 (30.4%)
Carcinoid tumor	2 (8.7%)
Benign lesion	2 (8.7%)
Tumor stage
IA	11 (52.4%)
IB	1 (4.8%)
IIA	4 (19%)
IIB	1 (4.8%)
IIIA	4 (19%)
Preoperative FEV1 (L/s)	2.19±0.83 (72.1%±22.6%)
3-month post-operative FEV1 (L/s)	1.81±0.58 (62.4%±19.2%)