Table 4. Clinical parameters during the follow-up period.

Parameter	Pre-surgery (N=48)	1 month (N=48)	3 months (N=48)	6 months (N=48)	1 year (N=48)	2 years (N=48)	3 years (N=48)	4 years (N=48)	5 years (N=44)	6 years (N=30)	7 years (N=9)
Karnofsky performance status score
100	0 (0.0)	12 (25.0)	26 (54.2)	36 (75.0)	40 (83.3)	42 (87.5)	42 (87.5)	46 (95.8)	44 (100.0)	30 (100.0)	9 (100.0)
90	2 (4.2)	29 (60.4)	18 (37.5)	10 (20.8)	7 (14.6)	5 (10.4)	6 (12.5)	2 (4.2)	0 (0.0)	0 (0.0)	0 (0.0)
80	16 (33.3)	6 (12.5)	3 (6.3)	2 (4.2)	1 (2.1)	1 (2.1)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)
70	28 (58.3)	1 (2.1)	1 (2.1)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)
60	2 (4.2)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)
Severity of dyspnea
None	28 (58.3)	46 (95.8)	47 (97.9)	48 (100.0)	48 (100.0)	48 (100.0)	48 (100.0)	48 (100.0)	44 (100.0)	30 (100.0)	9 (100.0)
Mild	16 (33.3)	2 (4.2)	1 (2.1)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)
Moderate	4 (8.3)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)

Statistics are presented as n (%).