Table 2.

Pathological characteristics of sublobar resection and lobectomy in non-lepidic NSCLC and lepidic NSCLC

Characteristic	Sublobar resection	Lobectomy	p-value
Non-lepidic NSCLC
N	60	131
Tumor size (cm)	1.3±0.4	1.6±0.3	<0.001
Differentiation			0.967
Well	22 (36.7)	47 (35.9)
Moderate	31 (51.7)	70 (53.4)
Poor	7 (11.7)	14 (10.7)
No. of dissected lymph nodes	4.2±6.7	12.1±7.4	<0.001
Histological type			0.390
Adenocarcinoma	49 (81.7)	111 (84.7)
Squamous cell carcinoma	8 (13.3)	10 (7.6)
Others	3 (5.0)	10 (7.6)
Adenocarcinoma subtype			0.102
Acinar adenocarcinoma	35 (71.4)	78 (70.3)
Papillary adenocarcinoma	5 (10.2)	21 (18.9)
Micropapillary adenocarcinoma	2 (4.1)	0
Solid adenocarcinoma	6 (12.2)	6 (5.4)
Other	1 (2.0)	6 (5.4)
Pathological stage			0.805
T1aN0M0	50 (83.3)	111 (84.7)
T1bN0M0	0	0
T2aN0M0	10 (16.7)	20 (15.3)
Visceral pleural invasion	10 (16.7)	20 (15.3)	0.805
Lymphatic invasion	15 (25.0)	36 (27.5)	0.719
Vascular invasion	5 (8.3)	14 (10.7)	0.614
Lepidic NSCLC
N	50	87
Tumor size (cm)	1.1±0.4	1.5±0.4	<0.001
Differentiation			0.448
Well	47 (94.0)	82 (94.3)
Moderate	1 (2.0)	4 (4.6)
Poor	2 (4.0)	1 (1.1)
No. of dissected lymph nodes	3.8±5.9	11.2±6.7	<0.001
Subtype			<0.001
Adenocarcinoma in situ	22 (44.0)	9 (10.3)
Minimally invasive adenocarcinoma	22 (44.0)	42 (48.3)
Lepidic adenocarcinoma	6 (12.0)	36 (41.4)
Pathological stage			<0.001
TisN0M0	22 (44.0)	9 (10.3)
T1aN0M0	27 (54.0)	74 (85.1)
T2aN0M0	1 (2.0)	4 (4.6)
Visceral pleural invasion	1 (2.0)	4 (4.6)	0.652
Lymphatic invasion	2 (4.0)	11 (12.6)	0.133
Vascular invasion	0	1 (1.1)	1.000

Values are presented as mean±standard deviation or number (%).

NSCLC, non-small cell lung cancer.