Activity of Antioxidant Enzymes in the Tumor and Adjacent Noncancerous Tissues of Non-Small-Cell Lung Cancer

Table 1

The clinical and pathological features of NSCLC patients.

Variables		Number of patients (%); 53 (100)
Sex	F	13 (24.53)
	M	40 (75.47)
Age	≤65 years	31 (58.49)
	>65 years	22 (41.51)
Histology	Squamous cell carcinoma	36 (67.93)
	Adenocarcinoma	17 (32.07)
Differentiation grade	G1	0 (0)
	G2	21 (39.62)
	G3	32 (60.38)
T factor	T1	12 (22.64
	T2	34 (64.15)
	T3	7 (13.21)
N factor	N0	27 (50.94)
	N1	18 (33.96)
	N2	8 (15.10)
COPD	Yes	22 (41.51)
	No	31 (58.49)
Smoking status	Smokers	39 (73.58)
	Nonsmokers	13 (24.53)
	No data	1 (1.89)

Abbreviations: G—histopathological cancer grading (G1: well differentiated; G2: moderately differentiated; G3: poorly differentiated; G4: undifferentiated); T—tumor size (T1: ; T2: to ≤5 cm; T3: to 7 cm); N—metastatic lymph nodes (N0: no regional lymph node metastasis; N1: metastasis in ipsilateral peribronchial and/or hilar lymph node and intrapulmonary node; N2: metastasis in ipsilateral mediastinal and/or subcarinal lymph nodes); COPD—chronic obstructive pulmonary disease [28].